000 00309nam a2200121Ia 4500
008 170101s1976 xx 000 0 und d
082 _a581.133 NUT
100 _aNutman P.S.
245 0 _aSymbiotic Nitrogen Fixation in Plants
260 _bCambridge Uni. Press
_c1976
300 _a584 p.
942 _2ddc
_cB
999 _c630216
_d630216