Abeywickrama, B. A The Genera of the freshwater algae of Sri Lanka, Part 1 - Colombo The National Science Council of Sri Lanka 1979 - 103 p. - Unesco : Man and the Biosphere National Committe for Sri Lanka, Publication No. - 06 . Subjects--Topical Terms: Freshwater AlgaePAMPHLET BOX 64SCIENCE COUNCIL