(Soil chemistry): final report
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Format: | Texto biblioteca |
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1970
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Subjects: | IGO IICA, RESEARCH INSTITUTIONS, SOIL CHEMISTRY, TRAINING COURSES, RESEARCH PROJECTS, CHEMICAL COMPOSITION, NUTRIENTS, TROPICAL SOILS, ORGANIC MATTER, NITROGEN, PHOSPHATES (SALTS), INSTITUTION DE RECHERCHE, CHIMIE DU SOL, COURS PROFESSIONNEL, INSTITUCIONES DE INVESTIGACION, QUIMICA DEL SUELO, CURSOS DE CAPACITACION, PROJET DE RECHERCHE, COMPOSITION CHIMIQUE, SUBSTANCE NUTRITIVE, SOL TROPICAL, MATIERE ORGANIQUE, AZOTE, PHOSPHATE (SEL), PROYECTOS DE INVESTIGACION, COMPOSICION QUIMICA, NUTRIENTES, SUELO TROPICAL, MATERIA ORGANICA, NITROGENO, FOSFATOS (SALES), |
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