By Chitundu Maureen   Droppelmann Klaus   Haggblade Steven   in Journal of Development Studies

ISSN:0022-0388|45|4|593-620

Routledge Ltd‎(2009)‎

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By Lehmann Johannes   Weigl Doris   Peter Inka   Droppelmann Klaus   Gebauer Gerhard   Goldbach Heiner   Zech Wolfgang   in Plant and Soil

ISSN:0032-079X|210|2|249-262

Springer Publishing Company ‎(1999)‎

Access to resources Favorite 8.042631