HOW Things work 2 <br/><br/>
Universal encyclopaedia of machines. 

 - Herts.  Granada Publishing Limited,  1979 
 - 590 
 - 2 .
<br/><br/><label>ISBN: </label>0 586 08173 9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>How Things Work<br/><br/>
<br/><br/><label>Dewey Class. No.: </label>603 HOWT