1
Cyhoeddwyd: [2018]
Superior document: Title is part of eBook package: De Gruyter Cornell University Press Archive Pre-2000
2
Cyhoeddwyd: [1989]
Superior document: Title is part of eBook package: De Gruyter CUP eBook Package Archive 1898-1999 (pre Pub)
Links: Cael y testun llawn; Cover
3
Cyhoeddwyd: [2001]
Superior document: Title is part of eBook package: De Gruyter Columbia University Press eBook-Package Backlist 2000-2013
Links: Cael y testun llawn; Cael y testun llawn; Cover
4
Cyhoeddwyd: [2019]
Superior document: Title is part of eBook package: De Gruyter Cornell University Press Archive Pre-2000
Links: Cael y testun llawn; Cael y testun llawn; Cover