000 00419nam a2200145Ia 4500
008 220204s9999 xx 000 0 und d
082 _a574:541.132
_bSIG.6
245 0 _aMetal ions in biological systems. V 6. Biological action of metal ions
260 _aNew York
_bMarcel Dekker
_c1976
650 _aBiological system
650 _aMetal ion
650 _aNitrogen fixation
700 _aSIGEL, Helmut
942 _cBK
999 _c24452
_d24452