Zaide, Gregorio,  c1985. <br/><br/>
The World :  Conceptual- Chronological Approach / 
Zaide, Gregorio. 
 - Updated Edition. 
 - Philippines :  National Bookstore, Inc,  c1985. 
 - 202p. :  illus. ;  25.4 cm. 
<br/><br/><label>ISBN: </label>9710805320