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Page from NIST (National 
      Institute of Standards and Technology) in Washington, D.C. 
    
   
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Prefixes used in SI units
    Page from NIST in Washington, 
      D.C.
   
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Page from NIST in Washington, 
      D.C. 
   
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Equivalences 
      in measures between SI and English
   
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Here is a very nice Periodic 
      Table that contains lots of physical properties and chemical properties 
      for the elements.
   
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Here are some tables that will appear as Useful Information on examinations 
      this semester: