003220000a2200121000450024500440000065000140004465000160005865000150007465000150008904100130010410000270011777300560014410aBacterial diversity and the environment14aBacterias14aEvolución14aEcología14aDiversidad0 aInglés1 aThomas, Christopher M.1 tElsevier Science Publishers3133h14q327-329d1996