000 00271nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aSubba Rao (N.S)
245 0 _aBiofertilizers in Agriculture
260 _bD.I.B.H
260 _c1982
365 _b60
942 _cBK
999 _c209666
_d209666