Selltiz, Claire <br/><br/>
Research methods in social relations 

 - New York:  Holt, Reinehart and Winston,  1967. 
 -  622p. 
<br/><br/>Includes index 
<br/><br/><br/>eng 
<br/><br/><label>Dewey Class. No.: </label>301.072  / SER