Educational resources information centre 

 - Washington :  Document Reproduction Service,  1967 
 - 67 p.;  22 cm. 
<br/><br/><label>ISBN: </label> $6.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ERIC (Information retrieval system)
<br/><br/><label>Dewey Class. No.: </label>025.04