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1
Environmental stress and conflicts in Africa : case studies of drainage basins /
Baskı/Yayın Bilgisi 1994Kitap -
2
Integrated natural resource management : in the highlands of Eastern Africa /
Baskı/Yayın Bilgisi 2012Kitap -
3
Environmental stress and conflicts in Africa : case studies of drainage basins /
Baskı/Yayın Bilgisi 1994Kitap -
4
Integrated natural resource management : in the highlands of Eastern Africa /
Baskı/Yayın Bilgisi 2012Kitap