000 00509nam a2200181Ia 4500
008 190516s9999 xx 000 0 und d
020 _a9780521648530
028 _bGangaram Book Bureau
_c4975
_d4-1-1999;@
100 _aPostgate, John
_922234
245 0 _aNitrogen Fixation
250 _a3
260 _bCambridge University Press
_c1978
_aNew York
300 _a111
600 _tEnvironmental Science
_9122800
650 _aEnvironmental Science
_9122800
942 _cREF
999 _c113829
_d113829