GALT (Anthony H) and Smith (Larry J). <br/><br/>
Models and the study of social change. 

 - New York.  Halsted press Book, John Wiley & Sons.,  1976 
 - ix,180 
<br/><br/><label>ISBN: </label>0 470 15163 3 
<br/><br/><label>Dewey Class. No.: </label>303.4 GALM