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== Reference ==
 
== Reference ==
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[http://www.sizes.com/units/SI.htm SI] at Sizes.com
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[[http://www.bipm.org/en/si/si_brochure/]] The official, definitive definition of the SI system, from the Bureau Internationale des Poids et Mesures.
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[http://physics.nist.gov/Pubs/SP811/contents.full.html] NIST Guide to the SI System
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[http://physics.nist.gov/Pubs/SP811/contents.full.html] Guide to the SI System from NIST, the lead federal agency on all metrology issues for the US.
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[http://www.sizes.com/units/SI.htm SI] at Sizes.com.
    
== See Also ==
 
== See Also ==
98

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