000 00303nam a2200133Ia 4500
008 160316s1981 xxu||||| |||| 00| 0 eng d
020 _a
100 _aW.J. Broughton
245 _aNitrogen Fixation
250 _a1st
260 _aNEW YORK
_bOXFORD UNIVERSITY PRESS
_c1981
300 _a306
700 _a
_a
999 _c1227
_d1227