What are Bacteria? by the Encyclopedia of Life.
Links for What are Bacteria?:
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http://www.eol.org/info/455
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Bacteria by Microbiology online, Microbiology Society, London, United Kingdom.
http://www.microbiologyonline.org.uk/about-microbiology/introducing-microbes/bacteria -
Bacteria by Microbe World, American Society for Microbiology, Washington, DC, U.S.A..
http://www.microbeworld.org/types-of-microbes/bacteria -
Bacteria by Wikipedia, the free encyclopedia.
https://en.wikipedia.org/wiki/Bacteria
