Green, S. L. <br/><br/>
අවකල සමීකරණ   

 - Educational Publication Department  Ceylon  1972 
 - 177p  1 
 - 2023-11-10 
<br/><br/><label>Nat. Bib. No.: </label>0004649 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>GRE 
<br/><br/><label>Universal Decimal Class. No.: </label>510