The testing of hydrometers / U.S. Bureau of Standards.
|Corporate Author:||United States.|
Washington, D.C. : Govt. print. off., 1914.
<3d ed.> Issued January 15, 1914.
S. W. Stratton, director.
At head of title: Department of commerce.
Contains also 2d ed.
16 p. :
ill., pl. ;
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