Langbein, Laura Irwin <br/><br/>
Ecological inference 
Laura Irwin Langbein, Allan J. Lichtman 
 - Newbury Park  Sage Publications  1978 
 - 70 p.  gráf.  22 
 - A Sage University paper  Quantitative applications in the social sciences  10 .
<br/><br/>Inclúe referencias bibliográficas (p. 68-70) 
<br/><br/><label>ISBN: </label>0-8039-0941-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecoloxismo<br/>Estatística