1
Cyhoeddwyd: [2014]
Superior document: Title is part of eBook package: De Gruyter Princeton Legacy Lib. eBook Package 1980-1999
Links: Cael y testun llawn; Cael y testun llawn; Cover
2
Cyhoeddwyd: [2011]
Superior document: Title is part of eBook package: De Gruyter DGBA Mathematics - 1990 - 1999
Links: Cael y testun llawn; Cael y testun llawn; Cover