Antonio P. Contreras et. Al <br/><br/>
Science, technology and society  ( a practical approach ) 

 -  Mindshapers Co. Inc. 
 -  c.2 .
<br/><br/><label>ISBN: </label>9786214061808 
<br/><br/><label>Dewey Class. No.: </label>Fil.509/C76s/c.2