| 626 | Distribution of Azolla in the Great Ouse catchment |
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| 627 | Investigation into the cause of high phenols in Budleigh Brook (1998) |
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| 628 | Time of travel on the [River] Chertsey Bourne under low flow conditions |
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| 629 | Regional fishing guide : a guide to day ticket waters in the Midlands |
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| 630 | An investigation into the sewage system and storm overflow at Beer (1997) |
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| 631 | Flood warning information for the Hertfordshire/Essex border : River Stort catchment |
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| 632 | River Axe Fish Study - Evaluation of Fish Movements in the Estuary |
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| 633 | An environmental snapshot for the Anglian region 2003 |
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| 634 | Sustainable urban drainage : an introduction : protecting the quality of our environment |
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| 635 | Identification of water quality problems in the Strat and Neet catchments |
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| 636 | Snapshots of the environment : managing our freshwater fisheries |
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| 637 | The effects of fishing at low water levels |
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| 638 | 1967 - George and Gideon cutting mbati for the bedroom block. |
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| 639 | 1967 - Quakers arriving on the shore of L.George. |
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| 640 | First annual review of the Taw/Torridge estuary catchment management plan (1996)
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| 641 | Suffolk estuarine strategies : Blyth estuary strategy : introduction to the strategy |
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| 642 | Method for the assessment of river water quality using benthic macroinvertebrates |
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| 643 | Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide |
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| 644 | The National Groundwater and Contaminated Land Centre (NGWCLC) |
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| 645 | The evaluation of a Philips ammonium ion selective electrode (220/14/T) |
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| 646 | The greening of Grasmere: its plankton periodicity in 1988 |
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| 647 | A strategic review of the petroleum refinery Industry Sector |
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| 648 | Guidelines for river corridor surveys in the NRA : February 1992. draft 3 |
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| 649 | Second annual review of the Sid/Otter catchment management plan 1999 |
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| 650 | Contribution of small streams to potential fish production in the Conwy catchment |
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