Frankfort-Nachmias Chava <br/><br/>
Research methods in  the social sciences 

 - 5 
 - New York, USA  St. Martin's  Press   1996 
 - xxii,600p. 
<br/><br/><label>ISBN: </label>0-312-10159-7 
<br/><br/><label>Source: </label>Reference 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research methods-social sciences