Lagos Matus, Gustavo. <br/><br/>
International stratification and underdeveloped countries. 

 - Chapel Hill  University of North Carolina Press  1963. 
 - 302 p.  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Underdeveloped areas<br/>International relations
<br/><br/><label>Subjects--Geographic Terms: </label><br/>States, Small