Proceedings of the Symposium on the Sustainability of Agricultural Production Systems in Sub-Saharan Africa, 4-7 September, 1989, Aas, Norway

Symposium on the Sustainability of Agricultural Production Systems in Sub-Saharan Africa (1989 : Ås, Norway) (Aas, Norway)

Conferences

  • Symposium on the Sustainability of Agricultural Production Systems in Sub-Saharan Africa (1989 : Ås, Norway) (Aas, Norway)

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Notes

  • Includes bibliographical references.
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