| 551 | A natural assets register for the Sankey catchment. Volume 2 |
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| 552 | Data mining of calculations for the control of emissions of organic compounds |
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| 553 | Environmental protection and pollution control : in the North West |
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| 554 | Buckingham flood defence improvements : presentation of the preferred option |
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| 555 | Impact of breakwaters on the water quality of Sidmouth beach |
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| 556 | Bass fishing in the Fal estuary and coastal area |
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| 557 | Report on the survey of SBM handlers in Devon |
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| 558 | Enhancing the environment : 25 case studies from Thames Region |
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| 559 | Fish Guide 1997/98 A Guide to day ticket fisheries in the Midlands |
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| 560 | Flood warning information for North Surrey : The Bournes catchment |
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| 561 | Improving the environment in Midlands region : Midlands local contribution 2006/11 |
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| 562 | England's river : a guide to the Thames from Remenham to Cookham |
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| 563 | Regulation of dioxin releases from the Runcorn operations of ICI and EVC |
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| 564 | Guidance on the application of environmental risk assessment for waste management licensing |
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| 565 | Partnership in environmental protection : schemes in the Midlands Region 1995 - 1996 |
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| 566 | Investigation of mercury contamination in the Red River catchment, West Cornwall |
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| 567 | An investigation into the incidence of spurting from weeping wall slurry stores |
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| 568 | NRA superannuation report and accounts for the period ended 31 March 1991 |
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| 569 | Further guidance on the environmental assessment of projects |
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| 570 | Assessing the impact of dewatering on water resources |
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| 571 | The use and design of oil separators in surface water drainage systems |
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| 572 | The utilisation of stick-pile otter holts in south east Wales |
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| 573 | Improving the Environment Agency's contribution to wetland bird populations |
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| 574 | Groundwater-surface Water Interactions in the Hyporheic Zone |
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| 575 | River water quality in the Midlands 1994/95 : water quality summary data |
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