Williamson,  E.H. <br/><br/>
Data book for pipe fitters and pipe welders/ 
E.H. Williamson 
 - Calcutta:  Rupa and Company,  c 1977 
 - 154 p.;  16 cm. 
<br/><br/><label>ISBN: </label> Rs.12.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pipe fitters<br/>Pipe fittings--Welding<br/>Pipe, plastics<br/>Piping<br/>Welding
<br/><br/><label>Dewey Class. No.: </label>621.8672