| 626 | Lower Lee fish mortalities associated with rainfall : including the event of 7/8th September 1993 |
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| 627 | Integrated river corridor assessment : a pilot study of the rivers Wansbeck and North Tyne in Northumbria |
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| 628 | River Teign corridor survey : prepared by Ecologue for the National Rivers Authority (South West Region) |
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| 629 | Scope for growth and levels of contaminants in mussels from the Wash. Phase 2 |
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| 630 | River Stort : draft catchment management plan for flood defence and the environment : May 1991 |
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| 631 | Recorded rainfall data from Rain Gauge 6 in the Wensum Catchment between 2010-2015 |
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| 632 | Recorded rainfall data from Rain Gauge 3 in the Wensum Catchment between 2010-2015 |
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| 633 | Recorded rainfall data from Rain Gauge 5 in the Wensum Catchment between 2010-2015 |
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| 634 | Recorded rainfall data from Rain Gauge 1 in the Wensum Catchment between 2010-2015 |
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| 635 | Recorded rainfall data from Rain Gauge 4 in the Wensum Catchment between 2010-2015 |
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| 636 | Recorded rainfall data from Rain Gauge 2 in the Wensum Catchment between 2010-2015 |
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| 637 | Correspondence Relating to the Seismic Surveys of Lake District Water Bodies undertaken by Prof. Gerald Sargent in 1983 and 1987 |
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| 638 | The Effect of N Fertiliser forms on nitrous oxide emissions from UK arable and grassland. Defra project number NT2605 |
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| 639 | The Effect of N Fertiliser forms on N2O emissions from UK arable and grassland. Experimental site in Norfolk, 2004 |
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| 640 | The Effect of N Fertiliser forms on N2O emissions from UK arable and grassland. Experimental site in Devon, 2004 |
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| 641 | Groundwater pollution : evaluation of the extent and character of groundwater pollution from point sources in England and Wales |
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| 642 | Effects of flow regime on the young stages of salmonid fishes- summary and conclusions based on results for 1981- 1985 |
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| 643 | Analytical method for the determination of acid herbicides in sandstone and chalk aquifer materials (Draft RanD note) P439/9/A |
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| 644 | Report for Welsh Region on selected flood defence schemes and the development of a standard methodology for risk assessment |
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| 645 | Front Cover of A Key to the British Species of Freshwater Cladocera, with Notes on their Ecology |
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| 646 | Report on US study tour of engineered wetlands for the treatment of waste water and mine drainage, March 1992 |
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| 647 | Freshwater migration of sea trout (Salmo trutta L.) in the river Tywi during 1988, 1989 and 1990 |
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| 648 | NRA Thames region : audit surveys 1991/92 : a report on the re-surveys of selected reaches of river following maintenance dredging |
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| 649 | Database and atlas of aquatic vascular plants in the British Isles : part 2 : distribution maps (352/2/N and Y) |
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| 650 | Proposed decision for the future regulation of disposals of radioactive waste from British Nuclear fuels plc Sellafield : supporting information |
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