McConnell, Harold, ed. Yaseen, David W, ed. <br/><br/>
Models of spatial variation 

 - Illinois  Northern illinois university press  1971 
 - x,131p.; 31cm. 
 - Perspectives in geography .
<br/><br/><label>ISBN: </label>875800246 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Model strategy<br/>Residential mobility<br/>Some properties of basic classes<br/>World history