Ranatunga, Aruna Bandara. <br/><br/>
General Chemistry  (G.C.E A/L) :  Chemical analysis & Calculations, Unit-3. 

 - 1st Ed. 
 - Kandy :   ab Publishers,   2012. 
 - 185 p. 
<br/><br/><label>ISBN: </label>9789555294942 
<br/><br/><label>Dewey Class. No.: </label>540  / RAN