Biological science / 
Ma. Joanna A. Astorga [and four others]. 
 - Manila :  Grandwater Publishing,  2010. 
 - vi, 269 pages :  illustrations ;  25 cm. 
<br/><br/> Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9789710183036 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology.