1. 1979
2. The history of forests and forestry in Wales up to the formation of the Forestry Commission

   Linnard, W. (Awdur), Ion 1979

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

3. 1978
4. Feeding and growth in an inshore population of plaice, Pleuronectes Platessa L

   Basimi, R. A. (Awdur), Tach 1978

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

5. 1976
6. Union theorems for double groupoids and groupoids: some generalisations and applications

   Sallen, A. R. B. (Awdur), Brown, R. (Goruchwylydd), 1976

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

7. 1974
8. A study of excretion in the slug Agriolimax reticulatus

   Garner, J. (Awdur), Medi 1974

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

9. Topological groupoids, measures and representations

   Seda, A. K. (Awdur), Mai 1974

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

10. Topological groupoids: coverings and universal constructions

    Hardy, J. P. L. (Awdur), Chwef 1974

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

11. 1973
12. The effects of trampling and vehicles on natural vegetation.

    Liddle, M. (Awdur), P. Greig-Smith, P. (Goruchwylydd), Mai 1973

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

13. 1972
14. The natural vegetation of the Sabah and natural regeneration of the Dipterocarp Forests.

    Fox, J. E. D. (Awdur), Meh 1972

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

15. 1971
16. The population biology of Littorina obtusata (L) (Gastropoda: Prosobranchiata).

    Guiterman, J. D. (Awdur), Hyd 1971

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

17. 1970
18. Studies on organ cultures of slug reproductive tracts

    Bailey, T. G. (Awdur), Medi 1970

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth