A guide to valve practice. 

 - Manchester :  Sir W. H. Bailey & co ltd.,  1957. 
 - 64 p. :  ill. ;  21 cm. 
<br/><br/> Include index. 
<br/><br/>340  340 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Valve Practice.
<br/><br/><label>Dewey Class. No.: </label>621.84 / W153g