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