00418nam a2200169Ia 4500008004100000020001500041082002000056100002400076245003100100260002600131300000800157650001400165650002000179653001600199653002100215653001200236170901s1973    xx            000 0 und d  a0582466709  a338.10913bH14T  aHaswell, Margaret R 0aTropical Farming Economics  aLondonbLongmanc1973  a174  aEconomics  aSocial sciences  aAgriculture  aEconomic aspects  aTropics