000 00387nam a2200133Ia 4500
008 140113s9999 xx 000 0 und d
082 _a581.138.1(082.2) M4
100 _a" Subba Rao, N. S."
245 _aCurrent developments in biological nitrogen fixation
260 _b"New Delhi : Oxford & IBH publishing Co, 1984"
300 _a351p.
650 _aNitrogen fixation
942 _cBK
999 _c63714
_d63714