000 00313nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _aGORDON(J.C)
245 0 _aBiological nitrogen fixation in forest ecosystems:
260 _b"Junk Publications,Netherland"
260 _c1983
365 _b0.00
942 _cBK
999 _c151762
_d151762