Desamero-Ditan, Carolina <br/><br/>
Earth Sciences / 
Carolina Desamero-Ditan. 
 - Mandaluyong City :  National Bookstore,  2012. 
 - 168 p:   ill.  23 cm 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>971-08-7147-1 
<br/><br/><label>LC Class. No.: </label>550 D45e