Jewkes, John,  1902- <br/><br/>
The sources of invention / 
by John Jewkes, David Sawers [and] Richard Stillerman. 
 - 2d ed. [rev. and enl.]. 
 - New York :  W. W. Norton,  [c1969] 
 - 372 p. :  ports. ;  20 cm. 
 - Norton library N502 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>039300502X 
<br/><br/><label>LCCN: </label>79090986 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inventions.
<br/><br/><label>LC Class. No.: </label>T212  / .J4 1969b 
<br/><br/><label>Dewey Class. No.: </label>608.7