| 626 | Database and atlas of aquatic vascular plants in the British Isles : part 1 species accounts |
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| 627 | The evaluation of a Partech model 5100 hand-held dissolved oxygen meter (220/26/T) |
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| 628 | Catches of Brown Trout in the River Don - Preliminary analysis of Angler's Returns |
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| 629 | Front Cover of A Key to the British Freshwater Cyclopid and Calanoid Copepods, with Ecological Notes |
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| 630 | Survey of physical characteristics of salmon spawning riffles in the river North Tyne
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| 631 | Nitrates in surface water, inputs and seasonality- Progress report for the period April- December 1987 |
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| 632 | Thames 21 - a planning perspective and a sustainable strategy for the Thames Region : consultation draft |
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| 633 | Environmental protection - the waste management licensing regulations 1994 : amended and consolidated. Version 5 |
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| 634 | Problems and solutions in the management of open seas fisheries for Atlantic salmon |
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| 635 | Road transport and the environment risk assessment and options appraisal : final summary report |
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| 636 | Space to live, space to play : a recreation strategy for the River Thames : appendices |
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| 637 | Blooming weather: Predicting the incidence of summers with high-risk of cyanobacterial blooms |
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| 638 | Mercury and methylmercury in the river Yare, Norfolk (1986 - 1992) : executive summary (OI/420/9/A) |
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| 639 | Best Available Techniques For The Control Of Pollution In Petrochemical And Large Volume Organic Chemical Processes |
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| 640 | A Review Of The Treatment Of Criticality In Post-Closure Safety Assessment Of Radioactive Waste Disposal |
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| 641 | An approach to hydrogeological assessment of Quaternary deposits in the UK: Part 1 Background |
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| 642 | Developing Guidance for Setting Limits on Radioactive Discharges to the Environment from Nuclear-licensed Sites |
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| 643 | Procedures and results of biochemical oxygen demand tests carried out at the Crossness laboratory 1990 |
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| 644 | Research and development 2000 : a strategy for the research and development support service : version 2 |
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| 645 | Review of the Potential Effects of Alkaline Plume Migration from a Cementitious Repository for Radioactive Waste. |
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| 646 | The Use of Catch Statistics to Monitor Fishery Change - Coarse Fish Study - Synopsis |
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| 647 | The Redgrave and Lopham Fens alleviation scheme : impact of options study : report to NRA Anglian Region |
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| 648 | The investigation of phytoplankton dynamics in coastal waters using aerial surveillance case study 3 |
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| 649 | The National Centre for Environmental Data and Surveillance : annual report April 1998 - April 1999 |
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| 650 | A Proposed Scheme To Ensure The Quality Of Data Generated By Laboratories Undertaking Regulatory Ecotoxicological Testing |
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