1. A.P.H. A., 1975. Standard methods for the examination of water and wastewater. 14th Edn. Am. publ. Hlth Ass., N.Y., 1193 pp.
2. Baker, J. M., 1970. Oil pollution in salt marsh communities. Mar. Pollut. Bull. l: 27?28.
3. Boesch, D. F., C. H. Heshner & J. H. Milgram, 1974. Oil spills and the marine environment. Ballinger, Cambridge, Mass., 114 pp.
4. Barsdate, R. J., M. C. Miller, V. Alexander, J. R. Vestal & J. E. Hobbie, 1980. Oil spill effects. In J. E. Hobbie(ed.), Limnology of Tundra Ponds. Dowden, Hutchingon & Ross, Inc., Stroudsburg: 388?406.
5. Cushman, R. M. & J. C. Goyert, 1984. Effects of a synthetic crude oil on pond benthic insects. Envir. Pollut. 33: 163?186.