00964cam a22002771 4500 sa 68013461 DLC 20260227112622.0 711115s1967 io b 000 0 eng sa 68013461 PL480:Indo-7050 DLC DLC DLC a-io--- HD2085.S75 P47 338.1/0992/1 Penny, David Harry. The index of economic-mindedness. Bogor, Panitia Seksi Dokumentasi, Survey Agro Ekonomi, 1967. 7 p. 32 cm. "Kutipan dari The transition from subsistence to commercial family farming in North Sumatra." Bibliography: p. 7. Agriculture Economic aspects Indonesia Sumatra. Farmers Indonesia Sumatra. Villages Indonesia Sumatra. Penny, David Harry. Transition from subsistence to commercial family farming in North Sumatra. 85122 85122