Basnayaka, V. <br/><br/>
School Biology Project 

 - Sri Lanka:  The Ceylon Association for the Advancement of Science,  1971. 
 - 372p.;  36cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology
<br/><br/><label>Dewey Class. No.: </label>570.71  / BAS