00288nam a2200109Ia 4500008004100000082001900041100000500060245004600065260004500111300000700156700001500163140316s9999    xx            000 0 und d  a633.18bCHA/FE  a  aFertilizer managemetn in rice cultivation  aNew DelhibIndian Social Institutec1991  a19  aChandy,K T