Basic concepts in biology / 
Gerard L. Penecilla [and five others]. 
 - Meycauayan, Bulacan :  Triniras Publishing, Incorporated,  c2003. 
 - 291 pages :  Illustration ;  25 cm. 
<br/><br/> Includes bibliography (p.277-280) and index. 
<br/><br/><label>ISBN: </label>9714203341 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology.