Papers presented at the colloquium on the fertility of tropical soils - Tananarive, malgasy Republic, 19-25 Nov 1967.
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| Format: | Texto biblioteca |
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1967
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| Subjects: | TROPICAL SOILS, SOIL FERTILITY, FERTILIZERS, ECONOMIC DISTRIBUTION, FARMERS, EXPERIMENTATION, WEST AFRICA, SOL TROPICAL, FERTILITE DU SOL, SUELO TROPICAL, FERTILIDAD DEL SUELO, ENGRAIS, DISTRIBUTION ECONOMIQUE, AGRICULTEUR, AFRIQUE OCCIDENTALE, ABONOS, DISTRIBUCION ECONOMICA, AGRICULTORES, EXPERIMENTACION, AFRICA OCCIDENTAL, |
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