Automatic apparatus for intermittent testing / by G.W. Vinal, Associate Physicist, L.M. Ritchie, Assistant Chemist, Bureau of Standards. July 22, 1920 ...
|Main Author:||Vinal, George Wood, 1882-|
|Other Authors:||Ritchie, La Marr, 1892-|
Washington, D.C. : U.S. Dept. of Commerce, Bureau of Standards : 1920.
Running title: Intermittent testing apparatus.
7 p. :
plates, diagr. ;
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