00361nam a2200133 a 450000500170000010000190001724500420003626000290007830000100010796400230011799700180014099900170015895200520017520251203090708.0  aSubba Rao,N.S.  aSoil micro organisms and plant growth  aOxfordbOxford&IBHc1977  a314p.  bENGLISHcdefg_  a16135 LIBSC C  c16706d16706  00104070aPUbPUd1998-09-08l0o p16135yBK