Rajan, Dewa <br/><br/>
වාණිජ අංක ගණිතය 
= wanija anka ganithaya 


 - Colombo:  Educational publications department,  1963. 
 - 432p.;  21cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>513.93  / RAJ