Abeywickrama, B.A. <br/><br/>
The genera of freshwater alge of Sri lanka 

 - Colombo  National science council   1979 
 - 103p.,  25 cm 
 - Unesco : Man and the biosphere national committee for Sri lanka publication No.6 .
<br/><br/><label>Universal Decimal Class. No.: </label>(x)582.26  / ABE