Não informado. (2000). Technical news from the National Bureau of Standards. U.S. Department of Commerce.
Citace podle Chicago (17th ed.)Não informado. Technical News from the National Bureau of Standards. Washington: U.S. Department of Commerce, 2000.
Citace podle MLA (8th ed.)Não informado. Technical News from the National Bureau of Standards. U.S. Department of Commerce, 2000.
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