Walton, W. B. <br/><br/>
German standard problem 4a / 
prepared by W. B. Walton, G. H. Howard [and] B. Johnson 
 - Washington, D.C. :  U.S. Government Printing Office,  1981 
 - Various pagings ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Standards, Engineering<br/>Standardization
<br/><br/><label>Dewey Class. No.: </label>658.51062