| 551 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk A |
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| 552 | The development of a portable battery-powered telemetry system for use in water quality investigations |
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| 553 | Impact assessment of Meldon quarry on water quality in the West Okement river |
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| 554 | River Meavy salmon and sea trout populations : assessment of the impact of flows |
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| 555 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk C |
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| 556 | The effect of ferric dosing of lakes on benthic invertebrates : first year report |
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| 557 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk D |
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| 558 | Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority |
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| 559 | The distribution of PCDDS and PCDFS in surface freshwater systems 2nd Interim Progress Report - February 1993 |
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| 560 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk M |
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| 561 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk M |
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| 562 | Monitoring of the River Burn upstream and downstream of Burnham Market sewage treatment works 1999 |
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| 563 | YSI, turbidity and discharge data for the Wensum Demonstration Test Catchment's monitoring kiosk M in 2013 |
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| 564 | An environmental assessment of mercury in mussels (Mytilus edulis L.) in the Mersey Estuary : final report |
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| 565 | Use Of Pattern Recognition To Identify The Source Of An Oil Spill On An Inland Water |
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| 566 | Aldrin and dieldrin concentrations in the Newlyn catchment during 1991 an interim report |
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| 567 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk A in 2014 |
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| 568 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk A in 2013 |
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| 569 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk A in 2012 |
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| 570 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk B |
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| 571 | Effects of suspended solids on salmon (Salmo salar, L.) in the Parrett stuary, Somerset, Draft |
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| 572 | Bathing water quality in England and Wales in 1995 : report of the National Rivers Authority |
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| 573 | Two year aesthetic survey of beaches in the South West (1990 and 1991) |
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| 574 | Water pollution incidents in England and Wales - 1993 : report of the National Rivers Authority |
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| 575 | Water pollution incidents in England and Wales - 1992 : report of the National Rivers Authority |
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