Penecilla, Gerard L. <br/><br/>
Basic concepts in biology / 
Gerard L. Penecilla et al. 
 - Philippines:  Trinitas Publishing, Inc.  2003. 
 - 291 p. 
<br/><br/>Includes reference and index. 
<br/><br/>
<br/><br/><label>ISBN: </label>9714203341 
<br/><br/><label>Dewey Class. No.: </label>PHs 574  / B292 2003 c.25