00356nam a2200097Ia 4500008004100000082002000041100002800061245010400089260005700193300000800250140113s9999    xx            000 0 und d  a016:631.84   L2  a"Tondon, H.L.S., comp."  a"Nitrogen in Indian Agriculture (1961-70) - A bibliography of N,NP,NK,NPK, & other related factors"  a1972bEuropean Nitrogen Service ProgrammecNew Delhi  a466