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276Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918
277The influence of agriculture on the quality of natural waters in England and Wales
278The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998
279The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990
280The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment
281The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation
282A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989
283A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990
284The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document
285Protecting your future : tackling flooding in the Thames Estuary through the 21st century
286The land-use planning system and the Water Framework Directive (can't read barcode)
287The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England;
288Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4
289Report 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
290Responses 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
291Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
292A report on the 1992 strategic stock assessment survey of the upper Dewent catchment and the River Marron with particular reference to salmonids
293Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species
294Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
295Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers
296Response to questions posed by Northumbrian Water Authority, with special reference to the fisheries implications of the operation of the Kielder Water Scheme
297Report 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
298A map of the Queen Elizabeth National Park and the area in which the IBP L. George team were situated from late 1966 to 1972.
299The effects of ammonia in discharges from Hogsmill STW on the water quality of the River Thames at Teddington : Summer 1990 an update
300Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS)