Cruz, Liwayway M. <br/><br/>
Ecology. 

 - 1st/ed. 
 - Philippines :  Booklore Publishing Corp.,  c2000. 
 - 197p.  (np)  20cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9718170170 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--c2000--Philippines--newsprint