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The primary production in the Sahel (PPS) project : a bird's-eye view / ed. H. Breman & P.W.J. Uithol.
- 862.201
- Centre for agrobiological research,
- 1984.
- Wageningen :
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Le projet production primaire au Sahel (PPS) : Ã vu d'oiseau / red. H. Breman & P.W.J. Uithol.
- 862.201
- Centre de recherches agrobiologiques,
- 1984.
- Wageningen :
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Development of the agricultural machinery industry in developing countries : proceedings of the 2nd international conference, Amsterdam 23-26 January 1984 / comp. A. Moens and A.H.J. Siepman.
- Pudoc,
- 1984.
- Wageningen :