Gregory, E. N. <br/><br/>
Welding symbols on drawings / 
E.N. Gregory and A.A. Armstrong. 
 - Boca Raton, FL :  Cambridge, England :  CRC Press ;  Woodhead,  2005. 
 - xiii, 55 p. :  ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>0849335914 (CRC Press) 185573589X (Woodhead Pub.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Welding--Notation.