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376A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989
377The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document
378An investigation into the effects of Alton sewage works on the River Wey North
379Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon
380A brief history of the River Stour navigation : 1705 to the present day
381The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish
382Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority
383Protecting your future : tackling flooding in the Thames Estuary through the 21st century
384The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England;
385Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4
386Report 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
387Responses 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
388Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
389A report on the 1992 strategic stock assessment survey of the upper Dewent catchment and the River Marron with particular reference to salmonids
390Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species
391Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
392Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
393East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe
394Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers
395Response to questions posed by Northumbrian Water Authority, with special reference to the fisheries implications of the operation of the Kielder Water Scheme
396Report 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
397A map of the Queen Elizabeth National Park and the area in which the IBP L. George team were situated from late 1966 to 1972.
398The effects of ammonia in discharges from Hogsmill STW on the water quality of the River Thames at Teddington : Summer 1990 an update
3991995 drought report : a report on the severity of the drought of 1995 and its effect in the Severn and Trent catchments
400Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS)