Graf, Rudolf F. <br/><br/>
How it works, illustrated: everyday devices and mechanisms 
by Rudolf F. Graf and George J. Whalen, and the editors of Popular science. Illustrated by Farmlett, Parsanti, & Wood. 
 - New York  Popular science  [1974] 
 - viii, 184 p.  illus. 
<br/><br/> 921004 
<br/><br/><label>ISBN: </label>0060115890 
<br/><br/><label>LCCN: </label>73080716  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technology--Popular works.
<br/><br/><label>LC Class. No.: </label>TX298  / .G68 
<br/><br/><label>Dewey Class. No.: </label>620