| 551 | Recorded rainfall data in the Wensum Catchment between 2010 and 2015 (hourly resolution) |
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| 552 | Protocol on "managing waste" : memorandum of understanding between Local Government Association and the Environment Agency |
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| 553 | Front Cover of Some Methods for the Statistical Analysis of Samples of Benthic Invertebrates |
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| 554 | Assessment of the nutrient status and associated algal productivity of Malham Tarn, Yorkshire
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| 555 | Invertebrates of Esthwaite in relation to development of fish farming in the South Basin |
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| 556 | Review of Literature on the Effect on Aquatic Communities of Particulate Copper in River Systems
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| 557 | Pesticides 1998 : a summary of monitoring of the aquatic environment in England and Wales |
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| 558 | Database and atlas of aquatic vascular plants in the British Isles : part 1 species accounts |
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| 559 | The evaluation of a Partech model 5100 hand-held dissolved oxygen meter (220/26/T) |
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| 560 | Catches of Brown Trout in the River Don - Preliminary analysis of Angler's Returns |
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| 561 | Front Cover of A Key to the British Freshwater Cyclopid and Calanoid Copepods, with Ecological Notes |
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| 562 | Survey of physical characteristics of salmon spawning riffles in the river North Tyne
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| 563 | Nitrates in surface water, inputs and seasonality- Progress report for the period April- December 1987 |
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| 564 | Thames 21 - a planning perspective and a sustainable strategy for the Thames Region : consultation draft |
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| 565 | Environmental protection - the waste management licensing regulations 1994 : amended and consolidated. Version 5 |
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| 566 | Problems and solutions in the management of open seas fisheries for Atlantic salmon |
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| 567 | Road transport and the environment risk assessment and options appraisal : final summary report |
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| 568 | Space to live, space to play : a recreation strategy for the River Thames : appendices |
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| 569 | Blooming weather: Predicting the incidence of summers with high-risk of cyanobacterial blooms |
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| 570 | Mercury and methylmercury in the river Yare, Norfolk (1986 - 1992) : executive summary (OI/420/9/A) |
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| 571 | A Review Of The Treatment Of Criticality In Post-Closure Safety Assessment Of Radioactive Waste Disposal |
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| 572 | An approach to hydrogeological assessment of Quaternary deposits in the UK: Part 1 Background |
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| 573 | Developing Guidance for Setting Limits on Radioactive Discharges to the Environment from Nuclear-licensed Sites |
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| 574 | Procedures and results of biochemical oxygen demand tests carried out at the Crossness laboratory 1990 |
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| 575 | Research and development 2000 : a strategy for the research and development support service : version 2 |
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