1
Cyhoeddwyd: [1975]
Superior document: International Studies in Sociology and Social Anthropology ; 19
2
Cyhoeddwyd: c1980.
Links: Cael y testun llawn
3
Cyhoeddwyd: [2011]
Superior document: Title is part of eBook package: De Gruyter DGBA History <1990
Links: Cael y testun llawn; Cael y testun llawn; Cover