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251Estuarine fish survey 1989 : inferences on the pollution status of the Thames estuary
252Investigation of the water quality in the Buckland stream up and downstream of East/West Buckland
253The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration
254Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918
255The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998
256The impact of industrial discharges on metal levels in biota of the West Cumbrian coast - 1990
257Environmental monitoring of the Fal Estuary to support the Fal Swan study : final draft report
258The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment
259The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation
260A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989
261A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990
262The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document
263The land-use planning system and the Water Framework Directive (can't read barcode)
264The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England;
265Report 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
266Responses 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
267Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
268A report on the 1992 strategic stock assessment survey of the upper Dewent catchment and the River Marron with particular reference to salmonids
269Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species
270Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
271Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers
272Response to questions posed by Northumbrian Water Authority, with special reference to the fisheries implications of the operation of the Kielder Water Scheme
273Report 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
274A map of the Queen Elizabeth National Park and the area in which the IBP L. George team were situated from late 1966 to 1972.
275The effects of ammonia in discharges from Hogsmill STW on the water quality of the River Thames at Teddington : Summer 1990 an update