Festinger, Leon, ed Katz, Daniel, ed <br/><br/>
Research methods in the behavioural sciences 

 - New Delhi  Amerind publishing co. pvt.ltd.  1953 
 - xi, 660 p.; 20cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Behavioural science research<br/>Social science - research