Stevens, Norman D.  <br/><br/>
A Comparative Study of Three Systems of Information Retrieval / 
Norman D. Stevens 
 - New Brunswick, N.J. :  Rutgers State University,  1961 
 - vii, 149 p. ;  20 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information storage and retrieval systems
<br/><br/><label>Dewey Class. No.: </label>025.04  / STC 1961