1. Agrawal S.B.: The control of the growth ofPithophora kewensis Wittr. with algicide copper sulphate.Sci. and Cul. 49, 404 (1983).
2. Agrawal S.B., Agrawal M., Nandi P.K., Rao D.N.: Effects of sulphur dioxide and Ekalux Ec-25 singly and in combination on the photosynthetic pigments ofOryza sativa plants.J. Env. Biol. 8, 315 (1987a).
3. Agrawal S.B., Agrawal M., Nandi P.K., Rao D.N.: Effects of sulphur dioxide and quinalphos singly and in combination on the metabolic functions and growth ofOryza sativa L. plants.Proc. Ind. Acad. Sci. (Part B)53, 169 (1987b).
4. Chaudhary B.R., Singh H.V.: Effects of mercuric chloride on akinete germination and sporulation inPithophora oedogonia (Mont.) Wittr. (Cladophorales, Chlorophyceae).J. Basic Microbiol. 26, 3 (1986).
5. Christie A.E.: Effects of insecticides on algae.Wat. Sewage Wks. 116, 172 (1969).