Patacsil, Lileth,  c2002. <br/><br/>
Science and Technology 
Patacsil, Lileth. 
 - Manila, Philippines :  Rex Bookstore, Inc,  c2002. 
 - 159p. :  illus. ;  25.4 cm. 
<br/><br/><label>ISBN: </label>971-689-164-4