International System of Units 4.0 from 0 reviews
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The International System uses history as a springboard to explain the scientific and social value of exacting worldwide "mastermeasures" of length, mass, temperature, and time.

Phoenix Learning Group, 2349 Chaffee Dr., St. Louis, MO 63146, Phone: (314)569-0211, Toll-free: 800-221-1274, Fax: (314)569-2834, URL:

Available on Running time 22 minutes.

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