Mendis, Hyacinth B. <br/><br/>
A Ready Reckoner for Percentages : teachers handbook 

 - Colombo :  Author,  1967. 
 - 59p.;  23cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teacher Handbook<br/>W.D. Fernando Collection<br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>513  / MEN