Deauna, Melecio C. <br/><br/>
Environmental Science for Philippine Schools. 

 - 1st./ed 
 - x, 309p  illus, glossary, index  25.5cm. 
<br/><br/><label>ISBN: </label>9710619985 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science--Q.C.,Philippines--1996--newsprint