1
Cyhoeddwyd: 1989
Superior document: BAR international series 485
2
Cyhoeddwyd: 2008.
Links: Cael y testun llawn
3
Cyhoeddwyd: [2021]
Superior document: Title is part of eBook package: De Gruyter Penn State University Press Complete eBook-Package Pre-2014
Links: Cael y testun llawn; Cael y testun llawn; Cover