00420naa a2200133 a 450000100080000000500110000800800410001910000200006024501000008026000090018065300120018970000130020177300720021416022011995-06-27       1979    bl ---       0--  u    #d1 aPOSTGATE, J. R.  aChapter 4.1. Nitrogen Fixation. 4.1.1. Ecological and economic importance of nitrogen fixation.  c1979  aREVISAO1 aHILL, S.  tIn: Microbial Ecology, a conceptual approach.gv., p.191-213, 1979.