Walker, John R.,  1924- <br/><br/>
Exploring metric drafting /  basic fundamentals 
by John R. Walker 
 - South Holland, Ill.  Goodheart-Willcox Co.  1980 
 - 320p.  ill.  29 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0870062891  RM39.69 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanical drawing.<br/>Metric system.