Gould, Ralph Edgar,  1886- <br/><br/>
Testing of timepieces / 
by R.E. Gould. 
 - ii, 27 pages :  tables, diagrams, 6 plates on 3 leaves ;  23 cm. 
 - 
 - U.S. National bureau of standards. Circular of the National bureau of standards C432 .
 - United States.  National Bureau of Standards.  Circular ;  C432. .
<br/><br/> At head of title: U.S. Dept. of commerce. Jesse H. Jones, secretary. National bureau of standards, Lyman J. Briggs, director ...  "Supersedes Circular C392." 
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<br/><br/><label>LCCN: </label>41051163  
<br/><br/><label>Nat. Bib. Agency Control No.: </label>001476076  Uk 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clocks and watches--Testing.
<br/><br/><label>Gov. Doc. Class. No.: </label>C 13.4:432 C 13.4:No.432