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1La productivité des paturages saheliens; une étude des sols, des végétations et de l´exploitation de cette ressource naturelle / La productivité des paturages saheliens; une étude des sols, des végétations et de l´exploitation de cette ressource naturelle /by Penning de Vries, F. W. T. edit.
Published 1982Texto bibliotecaCOLPOS -
2Texto bibliotecaUAAAN MX
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3Opportunities, use, and transfer of systems research methods in agriculture to developing countries proceedings of an International Workshop on Systems Research Methods in Agricul... Opportunities, use, and transfer of systems research methods in agriculture to developing countries proceedings of an International Workshop on Systems Research Methods in Agricul...Texto bibliotecaUAAAN MX