1
Cyhoeddwyd: 2011.
Superior document: Queen's policy studies series
Links: Cael y testun llawn
2
Cyhoeddwyd: 2012.
Superior document: Queen's Policy Studies Series
Links: Cael y testun llawn
3
Cyhoeddwyd: c2006.
Superior document: McGill-Queen's/Associated Medical Services studies in the history of medicine, health, and society ; 27
Links: Cael y testun llawn
4
Cyhoeddwyd: c1999.
Links: Cael y testun llawn