Harter, S. P. <br/><br/>
Online information retrieval   
by S. P. Harter 
 - London  Academic Press  1986 
 - xi, 259p. 
 - Library and information science series .
<br/><br/><label>ISBN: </label>012328456 
<br/><br/><label>Dewey Class. No.: </label>029.73  / N86