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African civilizations : precolonial cities and states in tropical Africa : an archaeological perspective / Graham Connah ; drawings by Douglas Hobbs.
- 967 C75225
- Connah, Graham.
- Cambridge University Press,
- 1987.
- Cambridge ; New York :
-
Agricultural research in the private sector in Africa: the case of Kenya / S. Huntington Hobbs, T. Ajibola Taylor.
- International service for national agricultural research (ISNAR),
- 1987.
- The Hague :
-
African civilizations : precolonial cities and states in tropical Africa : an archaeological perspective / Graham Connah ; drawings by Douglas Hobbs.
- Cambridge University Press,
- 1987.
- Cambridge [etc.] :