UNAM hoy 

 - Mexico :  [s.n.] 
 - v. 
<br/><br/> ULRICH'S  ISSN 
<br/><br/><label>ISSN: </label>0188-6630 
<br/><br/><label>Standard No.: </label>RELAP00121 
<br/><br/><label>Universal Decimal Class. No.: </label>378