R
R, or r, is the eighteenth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''ar'' (pronounced ), plural ''ars'', or in Ireland ''or'' ().The letter is the eighth most common letter in English and the fourth-most common consonant, after , , and . Provided by Wikipedia
1421
Published: 1924
Superior document: Palaeontologia Indica N.S., Vol.7, Memoir No.4
1422
Published: 1915
Superior document: University of Toronto studies : Biological series 15
1423
1424
Published: 1901
Superior document: Transactions of the Texas Academy of Science 4,1,[3]
1425
1426
Published: 1949
Superior document: Circular / California Agricultural Experiment Station 367
1427
Published: 1978
Superior document: Vorträge / Rheinisch-Westfälische Akademie der Wissenschaften: G, Geisteswissenschaften 226
1428
Published: 1907
Superior document: University of Toronto studies : Biological series 7
1429
Published: 1944
Superior document: University of Toronto studies : Biological series 52
1430
Published: 1905
Superior document: University of Toronto studies : Biological series 4
1431
1432
1433
1434
Published: 1967
Superior document: Monografia da tribo Ibidionini (Coleoptera, Cerambycinae) 1
1435
Published: 1974
Superior document: Ischnocera (Mallophaga) infesting parrots (Psittaciformes) 1
1436
1437
Published: 1960
Superior document: Berichte des Deutschen Wetterdienstes 61
1438
Published: 1992
Superior document: Inventory of sources for history of twentieth-century physics : report and microfiche index to 70,0000 letters [Mikrofiches]
1439
Published: 1971
Superior document: Monografia da tribo Ibidionini (Coleoptera, Cerambycinae) 6
1440