Deva Rajan,C.N. <br/><br/>
වාණිජ අංක ගණිතය 
 Vaanija anka ganithaya 

 -  Depatment of official languges  1963 
 - 431p.,  21 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Commercial arithmatic
<br/><br/><label>Universal Decimal Class. No.: </label>51  / DEV