Ranatunga, Aruna Bandara. <br/><br/>
G.C.E.(A/L) Environmental Chemistry. 

 - 1st Ed. 
 - Kandy :  ab Publications,  2013. 
 - 73 P. 
<br/><br/><label>ISBN: </label>9789550753079 
<br/><br/><label>Dewey Class. No.: </label>540  / RAN