Langbein, Laura Irwin <br/><br/>
Ecological inference 

 - Newbury park  Sage  1978 
 - 70p. 
 - Quantitative applications in the social sciences;10 .
<br/><br/><label>ISBN: </label>0803909411 
<br/><br/><label>Subjects--Index Terms: </label>Ecological interference 
<br/><br/><label>Dewey Class. No.: </label>300.072 7  / LAN