00487naa a2200169 a 450000100080000000500110000800800410001910000230006024500940008326000090017765000140018665000120020065000150021270000150022770000140024277300610025616134111995-06-27       1990    bl uuuu     u00u1 u    #d1 aPRETORIUS GUTH, M.  aConjugal transfer of megaplasmid 2 between Rhizobium meliloti strains in alfalfa nodules.  c1990  aGenética  aNódulo  aPlasmídeo1 aPUHLER, A.1 aSIMON, R.  tAppl. Environ. Microbiol.gv., n. 8, p. 2354-2359, 1990.