Weerakoon,U <br/><br/>
Mathdrawya handunaganeema wargeekaranaya saha nishpadana rata 

 - Warakapola  Aryan publishers  2003 
 - 75 p ., 
<br/><br/><label>ISBN: </label>9555532656 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drug identification<br/>classification<br/>production pattern
<br/><br/><label>Dewey Class. No.: </label>362  / WEE