Adler, John C. <br/><br/>
Invention / 
John C. Adler 
 - New York :  Harcourt Brace Jovanovich,  1972 
 - xii, 227p. :  ill. ;  28 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Patents and inventions<br/>Inventions
<br/><br/><label>Dewey Class. No.: </label>608.7  / ADL