1
Published: [1943]
Superior document: Title is part of eBook package: De Gruyter Rutgers University Press Archive eBook-Package Pre-2000
2
Published: 2001.
3
Published: c2001.
Links: Get full text
4
Published: [2011]
Superior document: Title is part of eBook package: De Gruyter DGBA Mathematics - 1990 - 1999
Links: Get full text; Get full text; Cover