Ostin, M.D.N. <br/><br/>
මහා විද්‍යාඥයෝ 
 Mahaa vidyaagnayo 

 - Colombo  M.D. Gunasena   1971 
 - 22p., ill.,  22 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Scientists <br/>John Logie Baird
<br/><br/><label>Universal Decimal Class. No.: </label>5.007  / OST