00256nam a2200097Ia 4500008004100000082002800041100001900069245003700088260002600125300000700151140113s9999    xx            000 0 und d  a633.15:631.526.325   L1  a"Vittal, Rao."  aHybrid Maize. Tech. Bull. No. 26  a1971bICARcNew Delhi  a50