King, Donald W. <br/><br/>
The evaluation of information services and products 

 - Washington :  Information Resources Press,  1971 
 - 306 p. 
<br/><br/> D18-76  Fotocopia 
<br/><br/><label>LCCN: </label>69796 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Servicios de información.
<br/><br/><label>Dewey Class. No.: </label>025.52  / K5