Ysgol Gwyddorau Amgylcheddol a Naturiol
- 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
- 1974
A study of excretion in the slug Agriolimax reticulatus
Awdur: Garner, J., Medi 1974Traethawd 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
- 1970
Studies on organ cultures of slug reproductive tracts
Awdur: Bailey, T. G., Medi 1970Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
- 1968
A comparative study of morphology, behaviour and ecology of Chaetogaster Limnaei ( von Baer) from several host species
Awdur: Buse, A., Medi 1968Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
- 1966
Studies in the flora of the Rhynie chert
Awdur: Saadawy, W. E., Meh 1966Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Studies on plant microfossils from the Carboniferous of North Wales
Awdur: Hibbert, F. A., Ebr 1966Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Studies on fossil plants of Karoo age from Central & Southern Africa
Awdur: Williams, P., Ion 1966Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth