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6851Investigations 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
6852NRA Welsh Region South West Area Minewaters Workshop, 23 May 1995, Swansea : summary report
6853The impact of ferruginous minewater break-outs on the environmental quality of the Rivers Rhymney, Ebbw and Sirhowy : summary report
6854A survey of ferruginous minewater impacts in the Welsh coalfields
6855Dioxins and the River Doe Lea : plain English report
6856A review of the industrial uses of continuous monitoring systems : incineration processes : a report produced for NCCA and ETSU by Entec
68571994 general quality assessment (GQA) Cornwall area
6858Kennet catchment : time of travel studies final report
6859Chlorohyll and Phosphorus Classifications for UK Lakes
6860Investigating the feasibility of using neural networks to derive chlorophyll a prediction algorithms for case 2 waters
6861Temporal variability in chlorophyll-a : concentrations in the coastal environment : final report
6862Herbarium Image: Phalaris arundinacea
6863Herbarium Image: Orobanche elatior
6864An appraisal of the options for the structure of the water resources function in Thames Region NRA
6865Grey tide against green marsh : sea defences in East Anglia : synopsis of proceedings of conference held at Snape on 1st November 1991
6866Public participation and the Water Framework Directive
6867Hampshire salmon seminar 5th October 1993
6868Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000
6869Chemical river quality 1993-1995 according to the general quality assessment (GQA) scheme [map] : scale 1 : 750 000
6870An investigation into bathing water quality at Millendreath
6871Guide to groundwater vulnerability mapping in England and Wales
6872Investigation of existing conservation interests and potential furtherance opportunities
6873Locations of licensed abstractions and hydrometric stations
6874NRA regional, area and catchment boundaries
6875Development of marine phytoplankton methodology and quality assurance procedures : second draft