Resultados de búsqueda - "phosphate rock"

Etude bibliographique et analyse economique de l'effet des phosphates naturels sur certaines plantes cultivees de l'Afrique de l'Est por Seyoum, E., McIntire, John M.

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Literature review and economic analysis of crop response to phosphate rocks in eastern Africa por Seyoum, E., McIntire, John M.

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Use of rainfall indices to analyze the effects of phosphate rocks on millet in the Sahel por Yamoah, C.F., Bationo, B. André, Shapiro, Barry I., Saidou, K

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