00493nam a2200193Ia 4500008004100000020001500041082002000056100001600076245005600092260002800148300000800176650001400184650002000198653001600218653002100234653001400255653001200269700001800281170901s1979    xx            000 0 und d  a0582603048  a338.10913bA13A  aAbott, J.C. 0aAgricultural Economics and Marketing in The Tropics  aNew YorkbLongmanc1979  a168  aEconomics  aSocial sciences  aAgriculture  aEconomic aspects  amarketing  aTropics  aMakeham, J.P.