Clustering and aggregation in economics 
[by] Walter D. Fisher.  
 - Baltimore,  Johns Hopkins Press  [1969]  
 - xii, 195 p  illus  24 cm. 
<br/><br/>Bibliography: p. 139-147.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Econometrics.
<br/><br/><label>LC Class. No.: </label>HB74.M3  / F532