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  1. 1

    Improving cash crops in Africa factors influencing the productivity of cotton, coffee, and tea grown by smallholders. door Carr, Stephen J.

    Gepubliceerd in 1993
    Boek

    Improving cash crops in Africa factors influencing the productivity of cotton, coffee, and tea grown by smallholders.
  2. 2

    Technology for small-scale farmers in Sub-Saharan Africa experience with food crop production in five major ecological zones. door Carr, Stephen J.

    Gepubliceerd in 1989
    Boek

    Technology for small-scale farmers in Sub-Saharan Africa experience with food crop production in five major ecological zones.

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