00279nam a2200097Ia 4500008004100000082001500041100004100056245005100097260002600148300000700174140113s9999    xx            000 0 und d  a631.8   K4  a"Raychaudhury, S.P. and Datta, N.D."  aPhosporous and potassium status of Indian Soil  a1964bICARcNew Delhi  a43