000 00315nam a2200121Ia 4500
008 220204s9999 xx 000 0 und d
082 _a631.461.5
_bBRO.1;1
245 0 _aNitrogen fixation. V 1. Ecology
260 _aOxford
_bClarendon
_c1981
650 _aNitrogen fixation
700 _aBROUGHTON, W J
942 _cBK
999 _c36455
_d36455