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6451The Worcestershire Stour catchment : recommendations for statutory water quality objectives
6452Time of travel study on the River Wandle under two different flow conditions
6453An assessment of river water quality in the River Kenn
6454River Hayle catchment river water quality classification 1990
6455River Hayle catchment river water quality classification 1991
6456Trewinnard Manor Pond pollution incident November 1990 : draft internal report
6457A Strategic Review Of Sheep Dipping
6458The Natural (Baseline) Quality of Groundwaters in England and Wales - Magnesium Limestone of Yorkshire and Northumbria
6459A survey of ferruginous minewater impacts in the Welsh coalfields
6460A simple key to canal water quality using a biological technique
6461Investigations into the status of fisheries, biological and water quality in the River Pelenna catchment, prior to the treatment of discharges from abandoned coal mines : PL/EAW/95/3
6462NRA Welsh Region South West Area Minewaters Workshop, 23 May 1995, Swansea : summary report
6463A survey of ferruginous minewater impacts in the Welsh coalfields
6464Dioxins and the River Doe Lea : plain English report
6465A review of the industrial uses of continuous monitoring systems : incineration processes : a report produced for NCCA and ETSU by Entec
64661994 general quality assessment (GQA) Cornwall area
6467Kennet catchment : time of travel studies final report
6468Chlorohyll and Phosphorus Classifications for UK Lakes
6469Herbarium Image: Phalaris arundinacea
6470Herbarium Image: Orobanche elatior
6471An appraisal of the options for the structure of the water resources function in Thames Region NRA
6472Public participation and the Water Framework Directive
6473Hampshire salmon seminar 5th October 1993
6474Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000
6475Chemical river quality 1993-1995 according to the general quality assessment (GQA) scheme [map] : scale 1 : 750 000