Aggregate data :  analysis and interpretation / 
Edgar F. Borgatta, David J. Jackson, editors. 
 - Beverly Hills, :  Sage Publications,  c1980. 
 - 192 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0803914288 0803914296 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Statistical methods.
<br/><br/><label>Dewey Class. No.: </label>300.182  / BOR N80A