| 576 | Catches of Brown Trout in the River Don - Preliminary analysis of Angler's Returns |
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| 577 | Front Cover of A Key to the British Freshwater Cyclopid and Calanoid Copepods, with Ecological Notes |
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| 578 | Investigation into the storm overflow discharge regime of Hill Barton Seawage Treatment Works Okehampton |
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| 579 | Survey of physical characteristics of salmon spawning riffles in the river North Tyne
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| 580 | Nitrates in surface water, inputs and seasonality- Progress report for the period April- December 1987 |
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| 581 | Thames 21 - a planning perspective and a sustainable strategy for the Thames Region : consultation draft |
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| 582 | Environmental protection - the waste management licensing regulations 1994 : amended and consolidated. Version 5 |
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| 583 | Problems and solutions in the management of open seas fisheries for Atlantic salmon |
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| 584 | Road transport and the environment risk assessment and options appraisal : final summary report |
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| 585 | Space to live, space to play : a recreation strategy for the River Thames : appendices |
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| 586 | Blooming weather: Predicting the incidence of summers with high-risk of cyanobacterial blooms |
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| 587 | Mercury and methylmercury in the river Yare, Norfolk (1986 - 1992) : executive summary (OI/420/9/A) |
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| 588 | Best Available Techniques For The Control Of Pollution In Petrochemical And Large Volume Organic Chemical Processes |
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| 589 | A Review Of The Treatment Of Criticality In Post-Closure Safety Assessment Of Radioactive Waste Disposal |
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| 590 | An approach to hydrogeological assessment of Quaternary deposits in the UK: Part 1 Background |
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| 591 | Developing Guidance for Setting Limits on Radioactive Discharges to the Environment from Nuclear-licensed Sites |
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| 592 | Procedures and results of biochemical oxygen demand tests carried out at the Crossness laboratory 1990 |
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| 593 | Research and development 2000 : a strategy for the research and development support service : version 2 |
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| 594 | Review of the Potential Effects of Alkaline Plume Migration from a Cementitious Repository for Radioactive Waste. |
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| 595 | The Use of Catch Statistics to Monitor Fishery Change - Coarse Fish Study - Synopsis |
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| 596 | The Redgrave and Lopham Fens alleviation scheme : impact of options study : report to NRA Anglian Region |
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| 597 | The investigation of phytoplankton dynamics in coastal waters using aerial surveillance case study 3 |
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| 598 | The National Centre for Environmental Data and Surveillance : annual report April 1998 - April 1999 |
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| 599 | A Proposed Scheme To Ensure The Quality Of Data Generated By Laboratories Undertaking Regulatory Ecotoxicological Testing |
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| 600 | Protocol on "managing waste": memorandum of understanding between Local Government Association and the Environment Agency |
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