Spencer, Herbert <br/><br/>
Institucions sociales. 

 - Madrid :  La Espaņa Moderna,  [19--]. 
 - 326 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOCIOLOGIA POLITICA
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>SOCIOLOGIA