000 00345nam a2200169Ia 4500
999 _c203168
_d203168
041 _aEnglish
082 _a589.9
082 _b-
100 _aNutman P S
245 _aSymbiotic nitrogen fixation in plants *
260 _a-
260 _bC.U.P
260 _c1976
300 _a573 Pages
650 _aNitrogen fixation
942 _cBK