Unday, Joel E.  <br/><br/>
Introduction to environmental science/ 
Joel E. Unday 
 - Revised edition 
 - Quezon City :    Maxor Publishing House Inc.,  c2012. 
 - 222 pages :   illustrations ;   26 cm. 
<br/><br/>Includes a glossary and references 
<br/><br/><label>ISBN: </label>9780710167067 
<br/><br/><label>Subjects--Topical Terms: </label><br/>1. Invironment Sciences. I. Banzuela, Shirley O. II. Dalisay, Jill B. III. Aromin, Mayette L. 
<br/><br/><label>Dewey Class. No.: </label>Fil. 363.7 In61 2012