601 | First annual review of the Taw/Torridge estuary catchment management plan (1996)
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602 | Suffolk estuarine strategies : Blyth estuary strategy : introduction to the strategy |
603 | Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide |
604 | The National Groundwater and Contaminated Land Centre (NGWCLC) |
605 | The evaluation of a Philips ammonium ion selective electrode (220/14/T) |
606 | The greening of Grasmere: its plankton periodicity in 1988 |
607 | A strategic review of the petroleum refinery Industry Sector |
608 | Guidelines for river corridor surveys in the NRA : February 1992. draft 3 |
609 | Second annual review of the Sid/Otter catchment management plan 1999 |
610 | Contribution of small streams to potential fish production in the Conwy catchment |
611 | NRA strategy for reducing the concentration of pesticides in controlled waters |
612 | Low-cost modifications of the Crump weir to improve fish passage |
613 | 'Sea Vigil' water quality monitoring : the Wash 1992-1993 |
614 | Second annual review of the Seaton, Looe and Fowey catchment management plan |
615 | The Yarrow catchment : recommendations for statutory water quality objectives |
616 | The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T) |
617 | The National Rivers Authority employee attitude survey : summary |
618 | The Use of a Hydroacoustic Counter for Assessing Salmon Stocks |
619 | Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A) |
620 | Pesticides in the aquatic environment 1997 : executive summary |
621 | Targeted Monitoring Programme for Pharmaceuticals in the Aquatic Environment |
622 | The Louth coastal catchment management plan : final report |
623 | Draft protocol for the derivation of Toxicity Based Consents |
624 | The Loddon catchment, Thames : recommendations for statutory water quality objectives |
625 | Assessment of the Impact of Nutrient Removal on Eutrophic Rivers |