00279nam a2200097Ia 4500008004100000082002200041100003500063245004900098260002600147300000800173140113s9999    xx            000 0 und d  a631.811.2:633  L9  aIndian Society of Soil Science  a"Phosphorus in soils, crops and fertilizers"  a1979bISSScNew Delhi  a611