Martyn, John. <br/><br/>
Investigative methos in library and information science  : an introduction 

 - Arlington :  Information Resources,  1981 
 - 280 p.  : ilus 
<br/><br/><label>LCCN: </label>32240 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biblioteconomía--Investigación.
<br/><br/><label>Dewey Class. No.: </label>020  / M3