Kowalski, Gerald  <br/><br/>
Information retrieval systems:  Theory and implementation 

 - Boston:  Kluwer Academic Publishers,  1997 
 - xiii, 282p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library information
<br/><br/><label>Subjects--Index Terms: </label>Digital libraries System operation 
<br/><br/><label>Universal Decimal Class. No.: </label>D 02:681.3  / N7