Levens, A. S. <br/><br/>
Graphics in Engineering Design :  workbook 1, a general treatment of engineering graphics / 
A. S. Levens, F. H. Schneider, L. C. Walter. 
 - New York :  John wiley,   c1980. 
 - 130 p.:  ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>047103133X 
<br/><br/><label>Dewey Class. No.: </label>604.2  / LEV