00325nam a2200085Ia 4500008004100000082001700041100001300058245011800071260005000189220204s9999    xx            000 0 und d  a631.432bSEN  aSEN, P K 0aMaximization of agricultural production: Proceedings of the first symposium of the Agricultural Society of India.  aCalcuttabAgricultural Society of Indiac1969