Biology (A/L) :  Grade -13 unit- 07,08. 

 - 2nd, Ed. 
 - Srilanka :  National Institute Of Education,  2023. 
 - viii,105 p. 
<br/><br/><label>ISBN: </label>9789556548938 
<br/><br/><label>Dewey Class. No.: </label>570  / BIO