| 526 | Distribution of Azolla in the Great Ouse catchment |
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| 527 | Investigation into the cause of high phenols in Budleigh Brook (1998) |
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| 528 | Leachate Monitoring For The Brogborough Test Cell Project |
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| 529 | Time of travel on the [River] Chertsey Bourne under low flow conditions |
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| 530 | Regional fishing guide : a guide to day ticket waters in the Midlands |
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| 531 | Non-compliance of the Bidwell Brook with river quality objectives |
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| 532 | An investigation into the sewage system and storm overflow at Beer (1997) |
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| 533 | Flood warning information for the Hertfordshire/Essex border : River Stort catchment |
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| 534 | River Axe Fish Study - Evaluation of Fish Movements in the Estuary |
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| 535 | An environmental snapshot for the Anglian region 2003 |
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| 536 | Sustainable urban drainage : an introduction : protecting the quality of our environment |
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| 537 | Identification of water quality problems in the Strat and Neet catchments |
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| 538 | The effects of fishing at low water levels |
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| 539 | 1967 - George and Gideon cutting mbati for the bedroom block. |
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| 540 | 1967 - Quakers arriving on the shore of L.George. |
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| 541 | First annual review of the Taw/Torridge estuary catchment management plan (1996)
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| 542 | Method for the assessment of river water quality using benthic macroinvertebrates |
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| 543 | Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide |
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| 544 | The National Groundwater and Contaminated Land Centre (NGWCLC) |
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| 545 | The evaluation of a Philips ammonium ion selective electrode (220/14/T) |
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| 546 | The greening of Grasmere: its plankton periodicity in 1988 |
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| 547 | A strategic review of the petroleum refinery Industry Sector |
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| 548 | Guidelines for river corridor surveys in the NRA : February 1992. draft 3 |
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| 549 | Contribution of small streams to potential fish production in the Conwy catchment |
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| 550 | NRA strategy for reducing the concentration of pesticides in controlled waters |
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