Cowles encyclopedia of science, industry, and technology. 

 - New York :  Cowles Education Corporation,  c 1967. 
 - vii, 510 p. :  ill. ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/>300  300 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science technology.
<br/><br/><label>Dewey Class. No.: </label>503 / C839