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Primary view of Report of the Twenty-Second National Conference on Weights and Measures, 1929
United States. National Bureau of Standards.
June 1929
Primary view of Report of the Twenty-Third National Conference on Weights and Measures, 1930
United States. National Bureau of Standards.
June 1931
Primary view of Report of the Twenty-Fourth National Conference on Weights and Measures, 1931
United States. National Bureau of Standards.
June 1931
Primary view of Report of the Twenty-Fifth National Conference on Weights and Measures, 1935
United States. Bureau of Standards.
June 1936
Primary view of Report of the Twenty-Sixth National Conference on Weights and Measures, 1936
United States. National Bureau of Standards.
June 1937
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