Department of education  <br/><br/>
ජීව විද්‍යාව  :  

 - Department of education :  Maharagama ; 
 - 51 p; 24 cm .  01 
 - 2025-02-17 
<br/><br/><label>Nat. Bib. No.: </label>0008456 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>SCI 
<br/><br/><label>Universal Decimal Class. No.: </label>520