Convey, John. <br/><br/>
Online information retrieval :  an introductory manual to principles and practice /  [Book]. 
John Convey.  
 - 4th ed. 
 - London :   Library Association Pub.,   1992. 
 - viii, 310 p. :   ill. ;   23 cm. 
<br/><br/> "A Clive Bingley book." 
<br/><br/>Includes bibliographical references (p. [252]-266) and index. 
<br/><br/><label>ISBN: </label>1856040119 
<br/><br/><label>LCCN: </label>93150072 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic information resource searching.<br/>Information retrieval.<br/>Online bibliographic searching.