Carrol Bark, William <br/><br/>
Orígenes del mundo medieval. 

 - 2 ed. 
 - Buenos Aires :  EUDEBA,  1978. 
 - xiii, 149 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECONOMIA<br/>EDAD MEDIA<br/>HISTORIA<br/>POLITICA
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>HISTORIA