Epan, Thomas <br/><br/>
සරල අංක ගණිතය 
 Simplified arithmetic 

 - Colombo  M.D. Gunasena   1966 
 - 269p.,  21 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic <br/>Mathematics
<br/><br/><label>Universal Decimal Class. No.: </label>511  / EPN