00272nam a2200097Ia 4500008004100000082002300041100002300064245004500087260003400132300000800166140113s9999    xx            000 0 und d  a631.586:581.1   L5  a"Gupta, U.S., ed."  aPhysiological aspects of dryland farming  a1975bOxford & IBHcNew Delhi  a391