000 00446nam a2200157Ia 4500
008 170101s1991 xx 000 0 und d
082 _a631.847 G37N
100 _aGiller, Ken E.
245 0 _aNitrogen fixation in Tropical cropping systems
260 _aWallingford
_bC.A.B. Int.
_c1991
300 _a24cm; 313
650 _aNITROGEN -- FIXATION
653 _aCROPPING SYSTEM -- TROPICS
653 _aNITROGEN -- FIXATION
942 _2ddc
_cB
999 _c111376
_d111376