Soil conservation and sustainable land use : an economuic approach
DE GRAAFF,Jan
Soil conservation and sustainable land use : an economuic approach - Amsterdam Royal Tropical Institute 1993 - 1990p.
90-6832-042-4
CONSERVATION DES SOLS
AGRICULTURE
UTILISATION DES TERRES
Soil conservation and sustainable land use : an economuic approach - Amsterdam Royal Tropical Institute 1993 - 1990p.
90-6832-042-4
CONSERVATION DES SOLS
AGRICULTURE
UTILISATION DES TERRES