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Published: Ibadan : International Inst. of Tropical Agriculture, 1992
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by:
Osman, Mohamed
Published in: Ökologische Zerstörungen in Afrika und alternative Strategien (1992)
Published in: Ökologische Zerstörungen in Afrika und alternative Strategien (1992)
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Published: Oxford : Berg, 1995
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by:
Silvestre, Pierre
Published: Paris <u.a.> : Agence de Cooperation Culturelle et Technique (u.a.), 1987
Published: Paris <u.a.> : Agence de Cooperation Culturelle et Technique (u.a.), 1987
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