000 00256nam a2200097Ia 4500
100 _aSubba Rao N S Ed
245 _aRecent Advances in Biological Nitrogen Fixation
260 _bOxford & IBH, New Delhi
082 _aJ:1:4/N79/B13922
300 _app 486; 24*16
999 _c1813
_d1813