Journal of research of the national bureau of standards / 
United States Department of Commerce 
 - Washington, D. C. :  The Department,  1980- 
 - v. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical measurements<br/>Mathematical physics
<br/><br/><label>Dewey Class. No.: </label>530.15