676 | First annual review of the Taw/Torridge estuary catchment management plan (1996)
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677 | Suffolk estuarine strategies : Blyth estuary strategy : introduction to the strategy |
678 | Method for the assessment of river water quality using benthic macroinvertebrates |
679 | Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide |
680 | The National Groundwater and Contaminated Land Centre (NGWCLC) |
681 | The evaluation of a Philips ammonium ion selective electrode (220/14/T) |
682 | The greening of Grasmere: its plankton periodicity in 1988 |
683 | A strategic review of the petroleum refinery Industry Sector |
684 | Guidelines for river corridor surveys in the NRA : February 1992. draft 3 |
685 | Second annual review of the Sid/Otter catchment management plan 1999 |
686 | Contribution of small streams to potential fish production in the Conwy catchment |
687 | NRA strategy for reducing the concentration of pesticides in controlled waters |
688 | Low-cost modifications of the Crump weir to improve fish passage |
689 | Policy and practice for the protection of groundwater - Thames region appendix |
690 | Policy and practice for the protection of floodplains |
691 | Second annual review of the Seaton, Looe and Fowey catchment management plan |
692 | The Yarrow catchment : recommendations for statutory water quality objectives |
693 | Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere |
694 | The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T) |
695 | Guidance on the use of Bioassays in Ecological Risk Assessment |
696 | The National Rivers Authority employee attitude survey : summary |
697 | The Use of a Hydroacoustic Counter for Assessing Salmon Stocks |
698 | Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A) |
699 | Pesticides in the aquatic environment 1997 : executive summary |
700 | Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment |