Lazarsfeld, Paul F. <br/><br/>
Organizing educational research :    an exploration /  
P. F. Lazar sfeld, Sam D. Sieber. 
 - New Jersey :    Prentice-Hall,    1964. 
 - ix, 113 p. ;    20 cm. 
<br/><br/>Includes bibliographical references (p. 107-113). 
<br/><br/><label>Dewey Class. No.: </label>378 LAZ