Hartl, Daniel L. <br/><br/>
On line information retrival: Concepts, principles and techniques 

 - Orlando  Alademic Press  1986 
 - xi,259p. 
<br/><br/><label>ISBN: </label> USD 46.00 
<br/><br/><label>Source: </label> USD 46.00 
<br/><br/><label>Dewey Class. No.: </label>025.524 HAR