Thorn, Eric A. <br/><br/>
Understanding copyright :  a practical guide / 
Eric A. Thorn. 
 - Tunbridge Wells :  Jay Books,  1989 
 - 128 p.   21 cm. 
<br/><br/>Includes bibliographical references (p. 126) and index. 
<br/><br/><label>ISBN: </label>1870404033 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Copyright;Microcomputers
<br/><br/><label>Universal Decimal Class. No.: </label>341.75820941