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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 land use on salmonids (Report 30) : a study of the River Torridge catchment
182A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989
183A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990
184The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document
185An investigation into the effects of Alton sewage works on the River Wey North
186Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon
187The land-use planning system and the Water Framework Directive (can't read barcode)
188Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4
189Report 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
190Responses 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
191Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
192Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species
193Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
194Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
195East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe
196Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers
197Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS)
198The 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
199The effects of ammonia in discharges from Hogsmill Valley sewage treatment works on the water quality of the River Thames at Teddington
200Measures to safeguard public water supplies : a second report to the Secretary of State for the Environment on the drought of 1995