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901Effects of flow regime on the young stages of salmonid fishes- summary and conclusions based on results for 1981- 1985
902Analytical method for the determination of acid herbicides in sandstone and chalk aquifer materials (Draft RanD note) P439/9/A
903Report for Welsh Region on selected flood defence schemes and the development of a standard methodology for risk assessment
904Front Cover of A Key to the British Species of Freshwater Cladocera, with Notes on their Ecology
905NRA guidance on the acceptable leachable values for contaminated material to be deposited in Upper Tame catchment
906Freshwater migration of sea trout (Salmo trutta L.) in the river Tywi during 1988, 1989 and 1990
907Investigating the effect of changing retention time in natural and artificial water bodies: Simulations using PROTECH-D
908NRA Thames region : audit surveys 1991/92 : a report on the re-surveys of selected reaches of river following maintenance dredging
909Progress in water supply planning : the Environment Agency's review of water company water resources plans : a submission to Government
910Database and atlas of aquatic vascular plants in the British Isles : part 2 : distribution maps (352/2/N and Y)
911Proposed decision for the future regulation of disposals of radioactive waste from British Nuclear fuels plc Sellafield : supporting information
912An overview of the IBP compound when building was finished (generator located in disused house in front).
913Nature's way : a guide to surface water best management practices, the effective and economic answer to non-point source pollution
914The Development of a Methodology to Assess Population Doses from Multiple Sources and Exposure Pathways of Radioactivity
915Audit of priority species of rivers and wetlands : Black Bog in South Hampshire and the Isle of Wight
916Front Cover of A Key to the British Fresh- and Brackish-Water Gastropods, with Notes on their Ecology
917Micro low flows average and low flows estimation in the SW region : validation of regional version 1.3 software
918The faunal richness of headwater streams. Stage 3 : impact of agricultural activities. Volume 2 : appendices (Note 392)
919Water resources for the future : a strategy for Wales (Bilingual) : Adnoddau dwr ar gyfer y dyfodol (Bilingual)
920Guidance to agency officers on the provision of technically competent management (multiple sites) at licensed waste facilities
921An investigation into the best method to combine national and local data to develop site-specific critical loads
922Mercury and methylmercury in the river Yare, Norfolk (1986 - 1992) (OI/420/8/A annex) : annex to main report
923Audit of priority species of rivers and wetlands : riverine and wetland molluscs in South Hampshire and the Isle of Wight
924Audit of priority species of rivers and wetlands : kingfisher Alcedo atthis in South Hampshire and the Isle of Wight
925Audit of priority species of rivers and wetlands : Marsh Fritillary in South Hampshire and the Isle of Wight