| 6401 | Trewinnard Manor Pond pollution incident November 1990 : draft internal report |
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| 6402 | A Strategic Review Of Sheep Dipping |
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| 6403 | Contaminants entering the sea : a report on contaminant loads entering the seas around England and Wales 1990-1993 |
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| 6404 | The Natural (Baseline) Quality of Groundwaters in England and Wales - Magnesium Limestone of Yorkshire and Northumbria |
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| 6405 | A survey of ferruginous minewater impacts in the Welsh coalfields |
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| 6406 | A simple key to canal water quality using a biological technique |
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| 6407 | Investigations 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 |
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| 6408 | NRA Welsh Region South West Area Minewaters Workshop, 23 May 1995, Swansea : summary report |
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| 6409 | The impact of ferruginous minewater break-outs on the environmental quality of the Rivers Rhymney, Ebbw and Sirhowy : summary report |
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| 6410 | A survey of ferruginous minewater impacts in the Welsh coalfields |
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| 6411 | Dioxins and the River Doe Lea : plain English report |
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| 6412 | A review of the industrial uses of continuous monitoring systems : incineration processes : a report produced for NCCA and ETSU by Entec |
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| 6413 | 1994 general quality assessment (GQA) Cornwall area |
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| 6414 | Kennet catchment : time of travel studies final report |
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| 6415 | Chlorohyll and Phosphorus Classifications for UK Lakes |
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| 6416 | Investigating the feasibility of using neural networks to derive chlorophyll a prediction algorithms for case 2 waters |
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| 6417 | Temporal variability in chlorophyll-a : concentrations in the coastal environment : final report |
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| 6418 | Herbarium Image: Phalaris arundinacea |
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| 6419 | Herbarium Image: Orobanche elatior |
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| 6420 | An appraisal of the options for the structure of the water resources function in Thames Region NRA |
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| 6421 | Grey tide against green marsh : sea defences in East Anglia : synopsis of proceedings of conference held at Snape on 1st November 1991 |
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| 6422 | Hampshire salmon seminar 5th October 1993 |
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| 6423 | Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000 |
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| 6424 | Chemical river quality 1993-1995 according to the general quality assessment (GQA) scheme [map] : scale 1 : 750 000 |
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| 6425 | An investigation into bathing water quality at Millendreath |
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