APA
Kassam A., . (1991). Agro-ecological land resources assessment for agricultural development planning. A case study of Kenya. Resources data base and land productivity. Technical Annex 4:Crop productivity. : .
Chicago
Kassam A.H, . 1991. Agro-ecological land resources assessment for agricultural development planning. A case study of Kenya. Resources data base and land productivity. Technical Annex 4:Crop productivity. : .
Harvard
Kassam A., . (1991). Agro-ecological land resources assessment for agricultural development planning. A case study of Kenya. Resources data base and land productivity. Technical Annex 4:Crop productivity. : .
MLA
Kassam A.H, . Agro-ecological land resources assessment for agricultural development planning. A case study of Kenya. Resources data base and land productivity. Technical Annex 4:Crop productivity. : . 1991.
SerieJęzyk: angielski Serie: World Soil Resources Reports ; No. 71/4Szczegóły wydania: 1991.Opis: s. VI, 141.ISBN: 
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