World's famous scientists and inventors :  supplementary for El-Hi students / 

 - Caloocan City :  Mizrack Pub,  199?. 
 - 2 pts. : photos. 
<br/><br/><label>ISBN: </label>9714000084 971860039 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Scientists--Biography.<br/>Inventors--Biography.<br/>Inventions