00277nam a2200097Ia 4500008004100000082002400041100002100065245005900086260002600145300000800171140113s9999    xx            000 0 und d  a631.85(40)(100)  M7  a"Tandon, H.L.S."  aPhosphorus research & agricultural Production in India  a1987bFDCOcNew Delhi  a160