Ysgol Gwyddorau Amgylcheddol a Naturiol
- 1970
Studies on organ cultures of slug reproductive tracts
Awdur: Bailey, T. G., Medi 1970Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
- 1973
The effects of trampling and vehicles on natural vegetation.
Awdur: Liddle, M., Mai 1973Goruchwylydd: P. Greig-Smith, P. (Unigolyn allanol) (Goruchwylydd)
Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
- 1974
A study of excretion in the slug Agriolimax reticulatus
Awdur: Garner, J., Medi 1974Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
- 1979
An economic appraisal of forestry and the forest industries of Greece 1950-1990.
Awdur: Sakkas, G. A., Ion 1979Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Studies in Antarctic palaeobotany.
Awdur: Lucas, R. C., Ion 1979Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The history of forests and forestry in Wales up to the formation of the Forestry Commission
Awdur: Linnard, W., Ion 1979Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
- 1980
Food selection by the rabbit.
Awdur: Soane, G. A., Ion 1980Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Studies on plant-animal interactions : Terrestrial molluscs and their food plants.
Awdur: Minjarez, R. D., Ion 1980Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Invasion of host tissue by infective larvae of Ascaris suum (Goeze, 1782)
Awdur: Arene, F. O. I., Tach 1980Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
- 1981
Micronutrient studies on cotton growth on Syrian calcareous soils.
Awdur: Mohammad, S. Y., Maw 1981Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth