000 00322nam a2200133Ia 4500
008 230108s9999 xx 000 0 und d
100 _aRao N.S.S.
245 0 _aRecent Advances in Biological Nitrogen Fixation
260 _bOxford & IBH
260 _c1979
365 _b125.00
650 _aSoil science
942 _cBK
999 _c239189
_d239189