LABOVITZ (Sanford) and HAGEDORN (Robert). <br/><br/>
Introduction to social research. 

 - New York.  McGraw-Hill book Co.,  1971 
 - viii,116 
<br/><br/><label>ISBN: </label>07 035736 6 
<br/><br/><label>Dewey Class. No.: </label>300.72 LABI