00291nam a2200097Ia 4500008004100000082003300041100002500074245005400099260003200153300000800185140113s9999    xx            000 0 und d  a631.559.2:633.11.2(100)   K9  a"Pawley, Watter. H."  aPossibilities of increasing world food production  a1963bOxfor & IBHcCalcutta  a225