000 00321nam a2200121Ia 4500
008 170101s1975 xx 000 0 und d
082 _a589.95 STE
100 _aStewart D. P.
245 0 _aNitrogen Fixation by Free Living micro organisms
260 _bCambridge Uni. Press
_c1975
300 _a471 p.
942 _2ddc
_cB
999 _c630166
_d630166