00385nam a2200097Ia 4500008004100000082002300041100003100064245013300095260005200228300000700280140113s9999    xx            000 0 und d  a631.84(082.2)   L1  a"Singh,A. and Patnaik, S."  aNitrate & ammoniacal sources of nitrogen for crops other than paddy and nitrogern fertilizers for Rice-ammonium or nitrate form.  a1971bFerilizer Association of IndiacNew Delhi  a42