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Transformation de l'environnement dans le Sahel ouest africain / [Advisory committee on the Sahel, Board on science and technology for international development, Office of international affairs, National research council, U.S.].
- 862.201
- OECD/Club du Sahel [etc.],
- 1984.
- Paris [etc.] :
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L'agroforesterie dans le Sahel ouest africain / [U.S. National research council, Office of international affairs, Board on science and technology for international development, Advisory committee on the Sahel].
- 862.201
- OECD/Club du Sahel [etc.],
- 1984.
- Paris [etc.] :