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176The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration
177Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918
178The influence of agriculture on the quality of natural waters in England and Wales
179The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998
180Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme
181The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990
182The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment
183A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989
184A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990
185The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document
186An investigation into the effects of Alton sewage works on the River Wey North
187Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon
188The land-use planning system and the Water Framework Directive (can't read barcode)
189Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4
190Report 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
191Responses 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
192Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
193Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species
194Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
195Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
196East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe
197Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers
198Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS)
199The effects of water resources management on the rivers Bure, Wensum and Nar in North Norfolk : Final project report to the National Rivers Authority. July 1994
200The effects of ammonia in discharges from Hogsmill Valley sewage treatment works on the water quality of the River Thames at Teddington