Warnken, Kelly  <br/><br/>
Directory of Fee-Based Information Services, 1978-79 

 - New York:  Kelly Wornken,  1978 
 - i, 96p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information services 
<br/><br/><label>Subjects--Index Terms: </label>Index  Supplement 
<br/><br/><label>Universal Decimal Class. No.: </label>D 002:659.2(058.7)   / L8