Petani di tanah merdeka Entang Sastraatmadja text Bogor Petani Center dan Himpunan Alumni IPB 2006 Ind Perp. memp. 2 eksp. Perp. memp. 2 eksp. FARMERS AGRICULTURAL DEVELOPMENT ECONOMIC DEVELOPMENT POVERTY FOOD SECURITY URN:ISBN:ISBN 979-25-5440-8