1. 1965
2. Comparative studies in the pathology of radiomimetic conditions

   Mason, J. (Awdur), Medi 1965

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

3. 1963
4. An ecological study of Chaetogaster limnaei( von Baer)

   Gruffydd, L. D. (Awdur), Ebr 1963

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

5. 1959
6. Calcareous algae of the silurian of the Welsh border

   Green, H. (Awdur), Ebr 1959

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

7. 1958
8. A Study in the Experimental Taxonomy of some British Sphagha (section Cuspidata),with observations of their ecology.

   Agnew, S. (Awdur), 5 Mai 1958

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth