Guillermo, Ramon <br/><br/>
Ang Kasaysayan ng Daigdig 

 - 2004 Edition  
 -  IBON Foundation, Inc.  2004 
 - iii, 440 pages 
<br/><br/><label>ISBN: </label>971-0325-44-2 
<br/><br/><label>Dewey Class. No.: </label>Fil. 909 K15 2004