Jayaweera <br/><br/>
New syllabus biology work book grade 11 
Upali Jayaweera 
 - Sri lanka  Champika printers  2011 
 - 84 
<br/><br/><label>ISBN: </label>9789556800609 
<br/><br/><label>Dewey Class. No.: </label>570  / JAY