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326Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918
327The influence of agriculture on the quality of natural waters in England and Wales
328The physical character of rivers and streams in the UK and Isle of Man
329The Distribution of Phytoplankton and Nutrients in the North East Irish Sea During 1998
330The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment
331The behaviour of atrazine and simazine within the chalk aquifer : experimental results and interpretation
332A unified information system to satisfy the NRA's requirement for ecotoxicology information: the specification study
333A collation of the environmental impact work carried out following the Rosebay oil spill, May 1990
334The application of toxicity-based criteria for the regulatory control of wastewater discharges: a consultation document
335A brief history of the River Stour navigation : 1705 to the present day
336The Investigation and Specification of Flow Measurement Structure Design Features that Aid the Migration of Fish
337Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority
338The land-use planning system and the Water Framework Directive (can't read barcode)
339The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Culm Aquifers, SW England;
340Rural sewage pollution in the '90s : report of the rural sewerage project 1993/4
341A review of the use of multifunction wardens in the Devon Area of the South Western Region of the National Rivers Authority, with particular reference to their use within the fisheries function
342Responses 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
343Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group
344Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species
345Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements
346Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
347Report 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
348A map of the Queen Elizabeth National Park and the area in which the IBP L. George team were situated from late 1966 to 1972.
349The effects of ammonia in discharges from Hogsmill STW on the water quality of the River Thames at Teddington : Summer 1990 an update
3501995 drought report : a report on the severity of the drought of 1995 and its effect in the Severn and Trent catchments