Lundgren, Lill
From soil conservation to land husbandry : guidelines based on SIDA´s experiance - Stockholm SIDA 1993 - 58 s. : ill.
AFRICA CULTIVATION SIDA SOIL CONSERVATION SOIL DETERIORATION
363.7
From soil conservation to land husbandry : guidelines based on SIDA´s experiance - Stockholm SIDA 1993 - 58 s. : ill.
AFRICA CULTIVATION SIDA SOIL CONSERVATION SOIL DETERIORATION
363.7