Não informado. (1919). Scientific Papers of the Bureau of Standards. U.S. Department of Commerce, National Bureau of Standards.
Chicago Style (17. basım) AtıfNão informado. Scientific Papers of the Bureau of Standards. Washington: U.S. Department of Commerce, National Bureau of Standards, 1919.
MLA (8th ed.) AtıfNão informado. Scientific Papers of the Bureau of Standards. U.S. Department of Commerce, National Bureau of Standards, 1919.
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