Gonzaga- dela Cruz, Rowena <br/><br/>
Introduction to Earth Science / 
Rowena G. De la Cruz, Chastine M.G. Cardenas, Benjamin S. Jaramilla. 
 - Valenzuela City :  Mutya Publishing House,  c2004. 
 - 192 p. : ill. 
<br/><br/> Includes bibliography. 
<br/><br/><label>ISBN: </label>971-821-059-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth Sciences--Study and teaching--Philippines