000 00317nam a2200097Ia 4500
008 120224s9999 xx 000 0 und d
082 _a589.9504133
_bALE
100 _aAlexander , Martin
245 _aBiological nitrogen fixation : ecology, technology and physiology
260 _bPlenum Press
_aNew York
_c1984
999 _c132093
_d132093