1. 
   Methanobacterium
   A genus of strictly anaerobic bacteria that reduce CO using molecular hydrogen, H2 , to give methane. They show a number of features that distinguish them from other bacteria, and are now classified as a separate group, the Archaebacteria. Methanobacteria are found in the anaerobic sediment at the b...
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
2. 
   Methanobacterium
   <bacteria> A genus of strictly anaerobic bacteria that reduce carbon dioxide using molecular hydrogen, H2, to give methane. They show a number of features that distinguish them from other bacteria and are now classified as a separate group, the Archaebacteria. ... Methanobacteria are found in ...
   Found op http://www.mondofacto.com/facts/dictionary?Methanobacterium
   
   
3. 
   Methanobacterium
   (from the article `archaea`) ...Archaea may be aerobic, anaerobic, or facultatively anaerobic in their metabolic requirements. Some archaea, such as Halobacterium, require a ...
   Found op http://www.britannica.com/eb/a-z/m/80
   
   
4. 
   Methanobacterium
   In taxonomy, Methanobacterium is a genus of the Methanobacteriaceae. == Further reading== === Scientific journals === === Scientific books === === Scientific databases === ...
   Found op http://en.wikipedia.org/wiki/Methanobacterium
   
   

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