Blalock, M Hubert <br/><br/>
Social statistics 

 - 2nd 
 - Aukland  McGraw - Hill Book Compa  1988 
 - 625 
<br/><br/><label>ISBN: </label>0-07-766175-8 
<br/><br/><label>Dewey Class. No.: </label>519.5 B612