Heaps, H. S. <br/><br/>
Information retrieval, computational and theoretical aspects / 
H. S. Heaps. 
 - New York :  Academic Press,  1978. 
 - xii, 344 p. :  ill. ;  24 cm. 
 - Library and information science. .
 - Library and information science. .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0123357500 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information storage and retrieval systems.