Boumphrey, Geoffrey,  1894-1969. <br/><br/>
Engines and how they work /  [Book] 
written  by Geoffrey Boumphrey ; illustrated by S. J. Graham Browne. 
 - London :  Vista Books,  1690. 
 - 255 pages :  illustrations ;  24 cm. 
 - The Franklin Watts illustrated science books .
<br/><br/> All 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanical engineering
<br/><br/><label>Dewey Class. No.: </label>621