00429nam a2200157Ia 4500008004100000082002000041100001700061245005000078260005200128300000800180650001400188650002000202653001600222653002100238653001200259170901s1960    xx            000 0 und d  a338.10913bK94T  aKool, Rudolf 0aTropical Agriculture and Economic Development  aThe NetherlandbH. Veenman and Zonen N.V.c1960  a151  aEconomics  aSocial sciences  aAgriculture  aEconomic aspects  aTropics