Hall James L. <br/><br/>
Online bibliographic database : A directory and sourcebook 

 - 4th ed. 
 - London:  The Association for Information Management;  1977 
 - xii,509P.:  ill.;  24cm 
<br/><br/>includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0 85142 202 0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information storage and retrieval systems-Directories<br/>On-line bibliographic searching-Directories<br/>London
<br/><br/><label>LC Class. No.: </label>SJMC Z699.22