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    Development and Extension of Agricultural Production Technology by Vallaeys, Guy, Silvestre, Pierre, Blackie, Malcom J., Delgado, Christopher L.

    Published 1987
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    Book Chapter
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    Farming Systems Research at the International Agricultural Research Centers by CGIAR Technical Advisory Committee, Dillon, John L., Plucknett, Donald L., Vallaeys, Guy

    Published 1978
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    Internal Document

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