La tierra agricola: nuestro recurso basico
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Quito (Ecuador) MAS
1986
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Subjects: | FARMLAND, LAND USE, RESOURCE CONSERVATION, LAND CLASSIFICATION, SOIL CLASSIFICATION, SOIL CONSERVATION, EROSION, CARTOGRAPHY, WATERSHEDS, LAND RESOURCES, FERTILIZERS, HERBICIDES, AGRICULTURAL POLICIES, AGRARIAN REFORM, TROPICAL ZONES, TERRE AGRICOLE, UTILISATION DES TERRES, CONSERVATION DES RESSOURCES, TIERRAS AGRICOLAS, UTILIZACION DE LA TIERRA, CONSERVACION DE LOS RECURSOS, CLASSIFICATION DES TERRES, CLASSIFICATION DES SOLS, CONSERVATION DES SOLS, CARTOGRAPHIE, BASSIN VERSANT, RESSOURCE FONCIERE, ENGRAIS, HERBICIDE, POLITIQUE AGRICOLE, REFORME AGRAIRE, ZONE TROPICALE, CLASIFICACION DE TIERRAS, CLASIFICACION DE SUELOS, CONSERVACION DE SUELOS, CARTOGRAFIA, CUENCAS HIDROGRAFICAS, RECURSOS DE LA TIERRA, ABONOS, HERBICIDAS, POLITICA AGRICOLA, REFORMA AGRARIA, ZONA TROPICAL, |
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