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Metric system in the United States

Binary Prefixes - used to quantify large amounts of computer data

BIPM (SI maintenance agency) (home page)

US NIST reference on SI

SI - Its history and use in science and industry

A Dictionary of Units of Measurement

I. Mills, Tomislav Cvitas, Klaus Homann, Nikola Kallay, IUPAC: Quantities, Units and Symbols in Physical Chemistry, 2nd ed., Blackwell Science Inc 1993, ISBN 0-632-03583-8.