1
Cyhoeddwyd: [1992]
Superior document: Title is part of eBook package: De Gruyter Columbia University Press eBook-Package Archive 1898-1999
2
Cyhoeddwyd: c2005.
3
Cyhoeddwyd: [2009]
Superior document: Title is part of eBook package: De Gruyter HUP eBook-Package Backlist 2000-2013 (Canada)
Links: Cael y testun llawn; Cael y testun llawn; Cover