1. Mountain weather and climate;Barry,1981
2. China's geographic foundations;Cressey,1934
3. Land of the 500 million;Cressey,1955
4. A rational approach to the selection of crops for areas of marginal rainfall in East Africa;Dagg;East Afr. Agric. For. J.,1965
5. Effective rainfall in irrigated agriculture;Dastane;FAO Irrigation and Drainage Paper No. 25,1974