| 6551 | Windermere South Basin Seismic Survey Data 1983 Section 10 |
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| 6552 | The NRA in business : annual review and summary accounts 1993-94 |
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| 6553 | Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority |
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| 6554 | Newton Abbot flood plan : public information leaflet |
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| 6555 | NRA flood defence strategy |
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| 6556 | Jaywick sea defence system |
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| 6557 | Protecting your future : tackling flooding in the Thames Estuary through the 21st century |
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| 6558 | Windermere South Basin Seismic Survey Data 1983 Section 03 |
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| 6559 | An Assessment of the Feasibility of Using DGT Procedures to Measure Trace Metals and Radionuclides in Rivers |
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| 6560 | Carnon valley update |
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| 6561 | Environmental statement for the River Wandle flood alleviation scheme contract one (C1) |
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| 6562 | Graphical representation of certain metals and organics concentrations versus flow rates for some of the rivers in Districts 3 and 6 |
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| 6563 | Wheal Jane minewater study : environmental appraisal and treatment strategy |
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| 6564 | Cyanobacteria (blue-green algae) in the south west region 1989 |
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| 6565 | Draft list of potential target contaminants of fish tissue : interim report (397/4/ST) |
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| 6566 | Report on the millennium chalk streams fly trends study : a survey carried out in 2000 among 365 fly fishermen, fishery owners, club secretaries and river keepers |
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| 6567 | Environmental Impacts of Alkylphenol Ethoxylates and Carboxylates. Part 1 Proposals for the Development of Environmental Quality Standards |
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| 6568 | NRA report of blue-green algal monitoring 1992 |
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| 6569 | Toxic blue-green algae : a report by the National Rivers Authority |
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| 6570 | NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group |
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| 6571 | Assessment of Field Monitors for Consent Monitoring - Phase 2 |
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| 6572 | Planning liaison with local planning authorities |
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| 6573 | Rivers Nene and Great Ouse eutrophication studies : final report |
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| 6574 | Cardiff Bay barrage : assessment of impact on salmonid fisheries : annual report 1990 : year one pre-barrage construction |
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| 6575 | River Mersey flood alleviation scheme : consultation document |
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