000 00279nam a2200121Ia 4500
008 161121s9999 xx 000 0 und d
100 _aSubba Rao (N.S.)
245 0 _aBiological Nitrogen Fixation
260 _cOxford, New Delhi
365 _b0
650 _aNIL
942 _cBK
999 _c107077
_d107077