Reproduction of copyrighted works by educators and librarians 

 - Washington, D.C. :  Copyright Office, Library of Congress,  1978 
 - 26 p. ;  27 cm. 
 - Circular (Library of Congress. Copyright Office) ;  21 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fair use (Copyright)--United States<br/>Photocopying services in libraries--United States<br/>Copyright--United States
<br/><br/><label>Dewey Class. No.: </label>346.730482