Pearson, G. H. <br/><br/>
Valve Design :   Manually operated patterns / 
G H Pearson. 
 - London :   Pitman,  c 1972. 
 - 166 p. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>313  313 
<br/><br/><label>ISBN: </label>0 273 31669 9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Applied physics.
<br/><br/><label>Dewey Class. No.: </label>621.815 / P317v