Joseph, V. <br/><br/>
Usaspela gatikaya 

 - Battaramulla  Adyapana Prakashana Depathamenthuwa  1994 
 - x, 418 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Applied mathematics
<br/><br/><label>Dewey Class. No.: </label>519  / JOS