00402naa a2200145 a 450000100080000000500110000800800410001910000130006024500850007326000090015865000150016765000180018265300160020077300400021616009241995-06-27 1978 bl --- 0-- u #d1 aHILL, S. aFactors influencing the efficiency of nitrogen fixation in free-living bacteria. c1978 aFisiologia aMicrorganismo aFACULTATIVO tEcol. Bull.gv.26, p.130-136, 1978.