Theil,  H. <br/><br/>
Linear aggregation of economic relations. 
by H Theil. 
 - Amsterdam.  North - Holland.  [19-?] 
 - xi,205p.;  23cm.- 
 - Contribution to economic analysis.no.7. .
<br/><br/><label>Dewey Class. No.: </label>382.1  / THE