Ludwig, Oswald A. <br/><br/>
Metalwork, technology and practice / 
Oswald A. Ludwig, Willard J. McCarthy and Victor E. Repp 
 - 6th ed. 
 - Illinois, IL :  McKnight,  1975 
 - xii, 658 p. :  ill. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>873451171 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Machine-shop practice<br/>Metal-work