00650nam a22002177a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001600102100004300118245005200161260004200213300003100255490004400286650002900330650002900359830004400388CHAP20220329141216.0971010s1975            r     00010     d  a64404  a65376  a72054  cCHAP  a631.46bS8400aStewart, William Duncan Pattersoneed.  aNitrogen fixation by free-living microorganisms  aLondon :bCambridge University,c1975  a471 p.b: ilus. : gráfs.  aInternational Biological Programmev; 614aBacterias nitrificantes.14aNitrógenoxFijación.  aInternational Biological Programmev; 6