An outline of social development. 

 - Moscow :  Progress Publishers,  [1970?] 
 - v. ; 
<br/><br/><label>ISBN: </label>SSCA787 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social evolution.
<br/><br/><label>Dewey Class. No.: </label>303.44  / Ou