De Regla, Editha N. <br/><br/>
Earth science / 
Editha N. De Regla, Butch Stephen C. Duay, Reuven Jein C. De Guzman. 
 - Bulacan :  St. Andrew Publishing,  c2014. 
 - vii, 176 p. : ill. ; 25 cm. 
<br/><br/><label>ISBN: </label>9789710143320 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth science