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401A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989
402A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990
403The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document
404An investigation into the effects of Alton sewage works on the River Wey North
405A brief history of the River Stour navigation : 1705 to the present day
406The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish
407Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority
408Protecting your future : tackling flooding in the Thames Estuary through the 21st century
409The land-use planning system and the Water Framework Directive (can't read barcode)
410The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England;
411Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4
412Report for Anglian Water, NRA Unit on the uses of the Orwell and the Stour Estuaries and the use of the mathematical model to derive long term consent limits for all inputs to Orwell Estuary
413Responses to 'Outlook for the environment' : a summary of the responses to the Environment Agency's consulation on the priorities for investment by water companies in environmental improvements as part of the Periodic Review
414Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
415Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
416Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
417East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe
418Response to questions posed by Northumbrian Water Authority, with special reference to the fisheries implications of the operation of the Kielder Water Scheme
419Report on the national marine analytical quality control scheme 1992/93 (MPMMG 93/12) : presented to the October 1993 meeting of the Marine Pollution Monitoring Management Group
420A map of the Queen Elizabeth National Park and the area in which the IBP L. George team were situated from late 1966 to 1972.
421The effects of ammonia in discharges from Hogsmill STW on the water quality of the River Thames at Teddington : Summer 1990 an update
4221995 drought report : a report on the severity of the drought of 1995 and its effect in the Severn and Trent catchments
423Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS)
424The Role of Bankside Habitat in River Ecology: The importance of riparian and marginal vegetation on the distribution and abundance of aquatice invertebrates
425The Movements of Atlantic Salmon (Salmo salar L.) and Sea Trout (Salmo trutta L.) Smolts in the Impounded Estuary of the R.Tawe, South Wales