Report of the fourth regional conference on soil fertility and fertilizer use - Bogota, Colombia, 18-23 Nov 1968.
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| Format: | Texto biblioteca |
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1969
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| Subjects: | FFHC, FERTILIZER APPLICATION, SOIL FERTILITY, FERTILIZERS, TRIAL METHODS, SOIL ANALYSIS, CARTOGRAPHY, ECONOMIC SITUATION, FERTILISATION, FERTILITE DU SOL, APLICACION DE ABONOS, FERTILIDAD DEL SUELO, ENGRAIS, METHODE D'ESSAI, ANALYSE DE SOL, CARTOGRAPHIE, SITUATION ECONOMIQUE, ABONOS, METODOS DE ENSAYO, ANALISIS DEL SUELO, CARTOGRAFIA, SITUACION ECONOMICA, |
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