Orbeta,Ramon N. <br/><br/>Scientists and  inventors Ramon N. Orbeta  - Manila:  Zeus Publishing;  [2000]  - viii 104 pages:  with illustration;  20 cm. <br/><br/><label>ISBN: </label>971855092 <br/><br/><label>Subjects--Topical Terms: </label><br/>Great Scientist and Inventors<br/><br/><label>LC Class. No.: </label>QI 195  / .O643 2000