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Caffrey, J. M., P. R. F. Barrett, K. J. Murphy and P. M. Wade (eds.): Management and Ecology of Freshwater Plants. Proceedings of the 9th International Symposium on Aquatic Weeds, European Weed Research Society 1997. (Developments in Hydrobiology, 120/ Hydrobiologia, 340). illus- XVI, 354 p. 4to. Cloth. (69527) 213.95
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