00371nam a2200121Ia 4500 130903s9999 xx 000 0 und d 631.84 85.001.7(047) M0 Improving efficiency of nitrogen and phosphorus fertilizers. New Delhi I.A.R.I. 1980 24p. Nitrogen Fertilizers,Phosphorus Fertilizers GRBK 0 0 0 0 KSD KSD 2013-09-03 0 631.84 85.001.7(047) M0 G72 2013-09-03 00:00:00 2013-09-03 GRBK 81428 81428