How things work : the universal encyclopedia of machines 

 - London  Granada Publishing  1971 
 - 591p 
<br/><br/><label>ISBN: </label>0586081739 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Machinery - Design
<br/><br/><label>Dewey Class. No.: </label>621.815  / HOW