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S.Moncheva, V.Doncheva, L.Kamburska, On the long term Response of harmful Algal Blooms to the Evolution of Eutrophication off the Bulgarian Black Sea Coast: are the recent changes a sign of the recoverey of the ecosystem - the uncertainties, IX International Conference - Harmful Algal Blooms - Hobrat, tasmania - Coll. reprints - Harmful Algal Blooms - 7-11 February 2000.