Science, technology and society / 
Naressia D. Seludo Ballena (and others). 
 - Meycauayan, Bulacan :  Trinitas Publishing Incorporated,  c2004. 
 - 324 pages :  illustration ;  23 cm. 
<br/><br/> Bibliography: page 317. 
<br/><br/><label>ISBN: </label>9714206065 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science and technology.