Ysgol Gwyddorau Amgylcheddol a Naturiol
- 1990
The application of recently developed techniques to Welsh Black Cattle in a group breeding scheme.
Awdur: Brown, C. M., Ebr 1990Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The effects of selective logging methods on hydrological parameters in Peninsular Malaysia.
Awdur: Nik, A. R. H., Ebr 1990Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Water relations of salt stressed wheat
Awdur: Arif, H., Ion 1990Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
- 1989
Vegetation succession following the clearance of Rhododendron in the Vale of Ffestiniog.
Awdur: Hockley, T. G., Hyd 1989Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
- 1988
Studies of the biological activity of a novel herbicide (Triasulfuron) including studies of mobility and persistence in soils.
Awdur: Oppong, F. K., Hyd 1988Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Cost benefit analysis and sustained yield forestry in India.
Awdur: Kumar, P. J. D., Ion 1988Goruchwylydd: Price, C. (Goruchwylydd)
Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
- 1987
Forest recreation use patterns user behaviour and recreational value in Malaysia.
Awdur: Sabri, W. M. W., Tach 1987Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Genetic and environmental factors in the migration of the African armyworm moth, Spodoptera exempta (Walker) (Lepidoptera :Noctuidae).
Awdur: Woodrow, K. P., Medi 1987Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Studies of leaf growth in barley
Awdur: Maan, A. A. S., Ion 1987Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
- 1986
Geochemical and mineralogical studies of the weathering of Silurian argillaceous rocks
Awdur: Chapman, P., Medi 1986Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth