Nachmias, David. <br/><br/>
Research methods in the social sciences / 
David Nachmias, Chava Nachmias. 
 - New York :  St. Martin's Press,  c1976. 
 - x, 335 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Methodology.<br/>Social sciences--Research.