000 00476nam a2200181Ia 4500
008 170901s1975 xx 000 0 und d
020 _a0521207088
082 _a589.7
_bS80N
100 _aStewart, W.D.P.
245 0 _aNitrogen fixation by free living micro-organisms
250 _a1
260 _aLondon
_bCambridge University Press
_c1975
300 _a471
650 _aBotanical sciences
650 _aPure Sciences
653 _aNitrogen fixation
942 _2ddc
_cBK
999 _c9893
_d9893