Rocks and Rock Formations : : A Key to Identification / / Jürg Meyer.
The first field guide that allows amateur rock enthusiasts to identify basic rocks and rock formations in a systematic wayMany of us are fascinated by rocks—but identifying them can seem daunting. It’s often tricky even for geologists, who rely on experience, intuition, and in-depth familiarity with...
Saved in:
Superior document: | Title is part of eBook package: De Gruyter EBOOK PACKAGE COMPLETE 2021 English |
---|---|
VerfasserIn: | |
MitwirkendeR: | |
Place / Publishing House: | Princeton, NJ : : Princeton University Press, , [2021] ©2021 |
Year of Publication: | 2021 |
Language: | English |
Series: | Princeton Field Guides ;
2 |
Online Access: | |
Physical Description: | 1 online resource (192 p.) :; 534 color photos. |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
9780691217550 |
---|---|
ctrlnum |
(DE-B1597)576610 (OCoLC)1247674893 |
collection |
bib_alma |
record_format |
marc |
spelling |
Meyer, Jürg, author. aut http://id.loc.gov/vocabulary/relators/aut Rocks and Rock Formations : A Key to Identification / Jürg Meyer. Princeton, NJ : Princeton University Press, [2021] ©2021 1 online resource (192 p.) : 534 color photos. text txt rdacontent computer c rdamedia online resource cr rdacarrier text file PDF rda Princeton Field Guides ; 2 Frontmatter -- CONTENTS -- Preface -- Why Rocks Are Different -- PART I: The Fundamentals -- Rocks: An Overview -- Rock-Forming Minerals -- Rock Textures and Structures -- Fossils in Rocks -- Secondary Alterations in Rocks -- Weathering Crusts -- Equipment Necessary for Rock Identification -- Approaching Rocks Intelligently -- Additional Research Methods for Rocks -- PART II: Identification Key -- Layout and Logic of the Key -- Prerequisites and Instructions for Use -- Identification Key with Illustrations -- PART III: An Introduction to Rock Classification -- Igneous Rocks 1: Plutonic Rocks (Plutonites) -- Igneous Rocks 2: Volcanic Rocks -- Sedimentary Rocks -- Metamorphic Rocks -- Photo Credits -- Index restricted access http://purl.org/coar/access_right/c_16ec online access with authorization star The first field guide that allows amateur rock enthusiasts to identify basic rocks and rock formations in a systematic wayMany of us are fascinated by rocks—but identifying them can seem daunting. It’s often tricky even for geologists, who rely on experience, intuition, and in-depth familiarity with rock-forming components. Rocks and Rock Formations allows everyone, amateur or professional, to successfully distinguish these amazing masses of minerals, using only careful observation, a magnifying glass, a pocket knife—and a bit of patience.Jürg Meyer provides a structured approach to the identification of all rocks within the three groups: sedimentary, igneous, and metamorphic. Bringing together more than 530 diagrams and photographs to illustrate essential characteristics, Meyer highlights some basics on rocks—their mineral constituents, structures, textures, fossils, weathering patterns, and more—which are important for a determination. The main part of the book is a handy and thorough identification key, which takes into account all possible rock variations, mixtures, and structural differences. The concluding section of the guide delves into rock systematics.Assuming little prior experience or knowledge, Rocks and Rock Formations is an invaluable resource for rock enthusiasts everywhere.Suitable for beginners and amateursHelpful, systematic identification keyExploration of all types of rocksMore than 530 diagrams and photographs Mode of access: Internet via World Wide Web. In English. Description based on online resource; title from PDF title page (publisher's Web site, viewed 01. Dez 2022) Rock-forming minerals Identification. Rocks Identification. NATURE / Rocks & Minerals. bisacsh Chris Pellant. Earth science. Helen Pellant. Rocks and Minerals. geology. grain size. granite. lichen. limestone. magmatic rocks. minerals. plutonic rocks. plutonites. rock collection. rock collectors. rock determination. rock identification. sandstone. stones. volcanic rocks. Epstein, Mark, contributor. ctb https://id.loc.gov/vocabulary/relators/ctb Title is part of eBook package: De Gruyter EBOOK PACKAGE COMPLETE 2021 English 9783110754001 Title is part of eBook package: De Gruyter EBOOK PACKAGE COMPLETE 2021 9783110753776 ZDB-23-DGG Title is part of eBook package: De Gruyter EBOOK PACKAGE Physics, Chemistry, Mat.Sc, Geosc 2021 English 9783110754162 Title is part of eBook package: De Gruyter EBOOK PACKAGE Physics, Chemistry, Mat.Sc, Geosc 2021 9783110753936 ZDB-23-DPC Title is part of eBook package: De Gruyter Princeton University Press Complete eBook-Package 2021 9783110739121 https://doi.org/10.1515/9780691217550?locatt=mode:legacy https://www.degruyter.com/isbn/9780691217550 Cover https://www.degruyter.com/document/cover/isbn/9780691217550/original |
language |
English |
format |
eBook |
author |
Meyer, Jürg, Meyer, Jürg, |
spellingShingle |
Meyer, Jürg, Meyer, Jürg, Rocks and Rock Formations : A Key to Identification / Princeton Field Guides ; Frontmatter -- CONTENTS -- Preface -- Why Rocks Are Different -- PART I: The Fundamentals -- Rocks: An Overview -- Rock-Forming Minerals -- Rock Textures and Structures -- Fossils in Rocks -- Secondary Alterations in Rocks -- Weathering Crusts -- Equipment Necessary for Rock Identification -- Approaching Rocks Intelligently -- Additional Research Methods for Rocks -- PART II: Identification Key -- Layout and Logic of the Key -- Prerequisites and Instructions for Use -- Identification Key with Illustrations -- PART III: An Introduction to Rock Classification -- Igneous Rocks 1: Plutonic Rocks (Plutonites) -- Igneous Rocks 2: Volcanic Rocks -- Sedimentary Rocks -- Metamorphic Rocks -- Photo Credits -- Index |
author_facet |
Meyer, Jürg, Meyer, Jürg, Epstein, Mark, Epstein, Mark, |
author_variant |
j m jm j m jm |
author_role |
VerfasserIn VerfasserIn |
author2 |
Epstein, Mark, Epstein, Mark, |
author2_variant |
m e me m e me |
author2_role |
MitwirkendeR MitwirkendeR |
author_sort |
Meyer, Jürg, |
title |
Rocks and Rock Formations : A Key to Identification / |
title_sub |
A Key to Identification / |
title_full |
Rocks and Rock Formations : A Key to Identification / Jürg Meyer. |
title_fullStr |
Rocks and Rock Formations : A Key to Identification / Jürg Meyer. |
title_full_unstemmed |
Rocks and Rock Formations : A Key to Identification / Jürg Meyer. |
title_auth |
Rocks and Rock Formations : A Key to Identification / |
title_alt |
Frontmatter -- CONTENTS -- Preface -- Why Rocks Are Different -- PART I: The Fundamentals -- Rocks: An Overview -- Rock-Forming Minerals -- Rock Textures and Structures -- Fossils in Rocks -- Secondary Alterations in Rocks -- Weathering Crusts -- Equipment Necessary for Rock Identification -- Approaching Rocks Intelligently -- Additional Research Methods for Rocks -- PART II: Identification Key -- Layout and Logic of the Key -- Prerequisites and Instructions for Use -- Identification Key with Illustrations -- PART III: An Introduction to Rock Classification -- Igneous Rocks 1: Plutonic Rocks (Plutonites) -- Igneous Rocks 2: Volcanic Rocks -- Sedimentary Rocks -- Metamorphic Rocks -- Photo Credits -- Index |
title_new |
Rocks and Rock Formations : |
title_sort |
rocks and rock formations : a key to identification / |
series |
Princeton Field Guides ; |
series2 |
Princeton Field Guides ; |
publisher |
Princeton University Press, |
publishDate |
2021 |
physical |
1 online resource (192 p.) : 534 color photos. |
contents |
Frontmatter -- CONTENTS -- Preface -- Why Rocks Are Different -- PART I: The Fundamentals -- Rocks: An Overview -- Rock-Forming Minerals -- Rock Textures and Structures -- Fossils in Rocks -- Secondary Alterations in Rocks -- Weathering Crusts -- Equipment Necessary for Rock Identification -- Approaching Rocks Intelligently -- Additional Research Methods for Rocks -- PART II: Identification Key -- Layout and Logic of the Key -- Prerequisites and Instructions for Use -- Identification Key with Illustrations -- PART III: An Introduction to Rock Classification -- Igneous Rocks 1: Plutonic Rocks (Plutonites) -- Igneous Rocks 2: Volcanic Rocks -- Sedimentary Rocks -- Metamorphic Rocks -- Photo Credits -- Index |
isbn |
9780691217550 9783110754001 9783110753776 9783110754162 9783110753936 9783110739121 |
callnumber-first |
Q - Science |
callnumber-subject |
QE - Geology |
callnumber-label |
QE431 |
callnumber-sort |
QE 3431.2 M4913 42021 |
url |
https://doi.org/10.1515/9780691217550?locatt=mode:legacy https://www.degruyter.com/isbn/9780691217550 https://www.degruyter.com/document/cover/isbn/9780691217550/original |
illustrated |
Not Illustrated |
dewey-hundreds |
500 - Science |
dewey-tens |
550 - Earth sciences & geology |
dewey-ones |
552 - Petrology |
dewey-full |
552 |
dewey-sort |
3552 |
dewey-raw |
552 |
dewey-search |
552 |
doi_str_mv |
10.1515/9780691217550?locatt=mode:legacy |
oclc_num |
1247674893 |
work_keys_str_mv |
AT meyerjurg rocksandrockformationsakeytoidentification AT epsteinmark rocksandrockformationsakeytoidentification |
status_str |
n |
ids_txt_mv |
(DE-B1597)576610 (OCoLC)1247674893 |
carrierType_str_mv |
cr |
hierarchy_parent_title |
Title is part of eBook package: De Gruyter EBOOK PACKAGE COMPLETE 2021 English Title is part of eBook package: De Gruyter EBOOK PACKAGE COMPLETE 2021 Title is part of eBook package: De Gruyter EBOOK PACKAGE Physics, Chemistry, Mat.Sc, Geosc 2021 English Title is part of eBook package: De Gruyter EBOOK PACKAGE Physics, Chemistry, Mat.Sc, Geosc 2021 Title is part of eBook package: De Gruyter Princeton University Press Complete eBook-Package 2021 |
is_hierarchy_title |
Rocks and Rock Formations : A Key to Identification / |
container_title |
Title is part of eBook package: De Gruyter EBOOK PACKAGE COMPLETE 2021 English |
author2_original_writing_str_mv |
noLinkedField noLinkedField |
_version_ |
1770176321950842880 |
fullrecord |
<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>06054nam a22009975i 4500</leader><controlfield tag="001">9780691217550</controlfield><controlfield tag="003">DE-B1597</controlfield><controlfield tag="005">20221201113901.0</controlfield><controlfield tag="006">m|||||o||d||||||||</controlfield><controlfield tag="007">cr || ||||||||</controlfield><controlfield tag="008">221201t20212021nju fo d z eng d</controlfield><datafield tag="020" ind1=" " ind2=" "><subfield code="a">9780691217550</subfield></datafield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1515/9780691217550</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-B1597)576610</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(OCoLC)1247674893</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-B1597</subfield><subfield code="b">eng</subfield><subfield code="c">DE-B1597</subfield><subfield code="e">rda</subfield></datafield><datafield tag="041" ind1="0" ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="044" ind1=" " ind2=" "><subfield code="a">nju</subfield><subfield code="c">US-NJ</subfield></datafield><datafield tag="050" ind1=" " ind2="4"><subfield code="a">QE431.2</subfield><subfield code="b">.M4913 2021</subfield></datafield><datafield tag="072" ind1=" " ind2="7"><subfield code="a">NAT030000</subfield><subfield code="2">bisacsh</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">552</subfield><subfield code="2">23</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Meyer, Jürg, </subfield><subfield code="e">author.</subfield><subfield code="4">aut</subfield><subfield code="4">http://id.loc.gov/vocabulary/relators/aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Rocks and Rock Formations :</subfield><subfield code="b">A Key to Identification /</subfield><subfield code="c">Jürg Meyer.</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="a">Princeton, NJ : </subfield><subfield code="b">Princeton University Press, </subfield><subfield code="c">[2021]</subfield></datafield><datafield tag="264" ind1=" " ind2="4"><subfield code="c">©2021</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">1 online resource (192 p.) :</subfield><subfield code="b">534 color photos.</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">computer</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">online resource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="347" ind1=" " ind2=" "><subfield code="a">text file</subfield><subfield code="b">PDF</subfield><subfield code="2">rda</subfield></datafield><datafield tag="490" ind1="0" ind2=" "><subfield code="a">Princeton Field Guides ;</subfield><subfield code="v">2</subfield></datafield><datafield tag="505" ind1="0" ind2="0"><subfield code="t">Frontmatter -- </subfield><subfield code="t">CONTENTS -- </subfield><subfield code="t">Preface -- </subfield><subfield code="t">Why Rocks Are Different -- </subfield><subfield code="t">PART I: The Fundamentals -- </subfield><subfield code="t">Rocks: An Overview -- </subfield><subfield code="t">Rock-Forming Minerals -- </subfield><subfield code="t">Rock Textures and Structures -- </subfield><subfield code="t">Fossils in Rocks -- </subfield><subfield code="t">Secondary Alterations in Rocks -- </subfield><subfield code="t">Weathering Crusts -- </subfield><subfield code="t">Equipment Necessary for Rock Identification -- </subfield><subfield code="t">Approaching Rocks Intelligently -- </subfield><subfield code="t">Additional Research Methods for Rocks -- </subfield><subfield code="t">PART II: Identification Key -- </subfield><subfield code="t">Layout and Logic of the Key -- </subfield><subfield code="t">Prerequisites and Instructions for Use -- </subfield><subfield code="t">Identification Key with Illustrations -- </subfield><subfield code="t">PART III: An Introduction to Rock Classification -- </subfield><subfield code="t">Igneous Rocks 1: Plutonic Rocks (Plutonites) -- </subfield><subfield code="t">Igneous Rocks 2: Volcanic Rocks -- </subfield><subfield code="t">Sedimentary Rocks -- </subfield><subfield code="t">Metamorphic Rocks -- </subfield><subfield code="t">Photo Credits -- </subfield><subfield code="t">Index</subfield></datafield><datafield tag="506" ind1="0" ind2=" "><subfield code="a">restricted access</subfield><subfield code="u">http://purl.org/coar/access_right/c_16ec</subfield><subfield code="f">online access with authorization</subfield><subfield code="2">star</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">The first field guide that allows amateur rock enthusiasts to identify basic rocks and rock formations in a systematic wayMany of us are fascinated by rocks—but identifying them can seem daunting. It’s often tricky even for geologists, who rely on experience, intuition, and in-depth familiarity with rock-forming components. Rocks and Rock Formations allows everyone, amateur or professional, to successfully distinguish these amazing masses of minerals, using only careful observation, a magnifying glass, a pocket knife—and a bit of patience.Jürg Meyer provides a structured approach to the identification of all rocks within the three groups: sedimentary, igneous, and metamorphic. Bringing together more than 530 diagrams and photographs to illustrate essential characteristics, Meyer highlights some basics on rocks—their mineral constituents, structures, textures, fossils, weathering patterns, and more—which are important for a determination. The main part of the book is a handy and thorough identification key, which takes into account all possible rock variations, mixtures, and structural differences. The concluding section of the guide delves into rock systematics.Assuming little prior experience or knowledge, Rocks and Rock Formations is an invaluable resource for rock enthusiasts everywhere.Suitable for beginners and amateursHelpful, systematic identification keyExploration of all types of rocksMore than 530 diagrams and photographs</subfield></datafield><datafield tag="538" ind1=" " ind2=" "><subfield code="a">Mode of access: Internet via World Wide Web.</subfield></datafield><datafield tag="546" ind1=" " ind2=" "><subfield code="a">In English.</subfield></datafield><datafield tag="588" ind1="0" ind2=" "><subfield code="a">Description based on online resource; title from PDF title page (publisher's Web site, viewed 01. Dez 2022)</subfield></datafield><datafield tag="650" ind1=" " ind2="0"><subfield code="a">Rock-forming minerals</subfield><subfield code="x">Identification.</subfield></datafield><datafield tag="650" ind1=" " ind2="0"><subfield code="a">Rocks</subfield><subfield code="x">Identification.</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">NATURE / Rocks & Minerals.</subfield><subfield code="2">bisacsh</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">Chris Pellant.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">Earth science.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">Helen Pellant.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">Rocks and Minerals.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">geology.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">grain size.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">granite.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">lichen.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">limestone.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">magmatic rocks.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">minerals.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">plutonic rocks.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">plutonites.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">rock collection.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">rock collectors.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">rock determination.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">rock identification.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">sandstone.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">stones.</subfield></datafield><datafield tag="653" ind1=" " ind2=" "><subfield code="a">volcanic rocks.</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Epstein, Mark, </subfield><subfield code="e">contributor.</subfield><subfield code="4">ctb</subfield><subfield code="4">https://id.loc.gov/vocabulary/relators/ctb</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Title is part of eBook package:</subfield><subfield code="d">De Gruyter</subfield><subfield code="t">EBOOK PACKAGE COMPLETE 2021 English</subfield><subfield code="z">9783110754001</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Title is part of eBook package:</subfield><subfield code="d">De Gruyter</subfield><subfield code="t">EBOOK PACKAGE COMPLETE 2021</subfield><subfield code="z">9783110753776</subfield><subfield code="o">ZDB-23-DGG</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Title is part of eBook package:</subfield><subfield code="d">De Gruyter</subfield><subfield code="t">EBOOK PACKAGE Physics, Chemistry, Mat.Sc, Geosc 2021 English</subfield><subfield code="z">9783110754162</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Title is part of eBook package:</subfield><subfield code="d">De Gruyter</subfield><subfield code="t">EBOOK PACKAGE Physics, Chemistry, Mat.Sc, Geosc 2021</subfield><subfield code="z">9783110753936</subfield><subfield code="o">ZDB-23-DPC</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Title is part of eBook package:</subfield><subfield code="d">De Gruyter</subfield><subfield code="t">Princeton University Press Complete eBook-Package 2021</subfield><subfield code="z">9783110739121</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://doi.org/10.1515/9780691217550?locatt=mode:legacy</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://www.degruyter.com/isbn/9780691217550</subfield></datafield><datafield tag="856" ind1="4" ind2="2"><subfield code="3">Cover</subfield><subfield code="u">https://www.degruyter.com/document/cover/isbn/9780691217550/original</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">978-3-11-073912-1 Princeton University Press Complete eBook-Package 2021</subfield><subfield code="b">2021</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">978-3-11-075400-1 EBOOK PACKAGE COMPLETE 2021 English</subfield><subfield code="b">2021</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">978-3-11-075416-2 EBOOK PACKAGE Physics, Chemistry, Mat.Sc, Geosc 2021 English</subfield><subfield code="b">2021</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">EBA_CL_CHCOMSGSEN</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">EBA_EBKALL</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">EBA_ECL_CHCOMSGSEN</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">EBA_EEBKALL</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">EBA_ESTMALL</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">EBA_PPALL</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">EBA_STMALL</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV-deGruyter-alles</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">PDA12STME</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">PDA13ENGE</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">PDA18STMEE</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">PDA5EBK</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-23-DGG</subfield><subfield code="b">2021</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-23-DPC</subfield><subfield code="b">2021</subfield></datafield></record></collection> |