576 | Distribution of Azolla in the Great Ouse catchment |
577 | Leachate Monitoring For The Brogborough Test Cell Project |
578 | Time of travel on the [River] Chertsey Bourne under low flow conditions |
579 | Regional fishing guide : a guide to day ticket waters in the Midlands |
580 | Flood warning information for the Hertfordshire/Essex border : River Stort catchment |
581 | River Axe Fish Study - Evaluation of Fish Movements in the Estuary |
582 | Waste : strategic waste management survey : landfill within the East Midlands planning region |
583 | Sustainable urban drainage : an introduction : protecting the quality of our environment |
584 | Identification of water quality problems in the Strat and Neet catchments |
585 | Snapshots of the environment : managing our freshwater fisheries |
586 | The effects of fishing at low water levels |
587 | 1967 - George and Gideon cutting mbati for the bedroom block. |
588 | 1967 - Quakers arriving on the shore of L.George. |
589 | First annual review of the Taw/Torridge estuary catchment management plan (1996)
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590 | Suffolk estuarine strategies : Blyth estuary strategy : introduction to the strategy |
591 | Method for the assessment of river water quality using benthic macroinvertebrates |
592 | Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide |
593 | The National Groundwater and Contaminated Land Centre (NGWCLC) |
594 | The evaluation of a Philips ammonium ion selective electrode (220/14/T) |
595 | The greening of Grasmere: its plankton periodicity in 1988 |
596 | A strategic review of the petroleum refinery Industry Sector |
597 | Guidelines for river corridor surveys in the NRA : February 1992. draft 3 |
598 | Contribution of small streams to potential fish production in the Conwy catchment |
599 | NRA strategy for reducing the concentration of pesticides in controlled waters |
600 | The ecology and management of riverine trees : interim report |