00324nam a2200109Ia 4500008004100000082002300041100002400064245004100088260005100129300001000180650002400190140113s9999    xx            000 0 und d  a631.461:581.143 L7  a" Subba Rao, N. S."  aSoil microorganisms and plant growth  b"New Delhi : Oxford & IBH publishing Co, 1977"  a289p.  aSoil microorganosms