Index to educational slides / 
National Information Center for Educational Media (NICEM). 
 - 4th ed. 
 - Los Angeles :  National Information Center for Educational Media,  1980. 
 - 1011 p. ;  28 cm. 
<br/><br/><label>ISBN: </label>0893200352 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Slides (Photography)--Catalogs.