Mga siyentipikong kilala sa sandaigdigan 

 - Manila    Educational Publishing House  2006 
 - viii, 145 p. 
<br/><br/><label>ISBN: </label>978-971-513-224-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inventors- Biography<br/>Scientist - Biography
<br/><br/><label>Dewey Class. No.: </label>Fil 509.2 Si9