00313nam a2200109Ia 4500008004100000082002000041245003100061260002900092650002400121650002000145650003800165220204s9999    xx            000 0 und d  a631/635bADV.39 0aAdvances in agronomy. V 39  aNew YorkbAcademicc1986  aCrop water deficits  aMaize germplasm  aTropical rain forest conservation