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2776MDSF1 (Modelling and Decision Support Framework)
2777National guidelines for the production of NRA regions 1990/91 regional plans
2778National Rivers Authority annual report and accounts 1995/96
2779National Rivers Authority Pension Fund Report and Accounts March 1995
2780National Rivers Authority Superannuation Funds report and accounts 1992
2781National Rivers Authority Welsh Region 1994/95 draft regional plan
2782National Rivers Authority, Welsh Region : regional review 1989/90
2783New Sampling and Analytical Methods: Pesticides and Transformation Products in Chalk Aquifers
2784NRA superannuation fund : report and accounts March 1993
2785NRA Thames region : audit surveys 1991/92 : a report on the re-surveys of selected reaches of river following maintenance dredging
2786Operating Manual For Transportable Estuarine Ph Instrument
2787Operational mechanisms for the protection and enhancement of headwaters
2788Alternative Farming Methods (Arable - Phase 2).
2789Oxford Canal fisheries survey 1990 : Upper Thames area
2790Partitioning of contaminants between water and sediment
2791Paying for flood defence : fact file
2792Pesticides in the aquatic environment 1996
2793Physical environment for river invertebrate communities : interim report August 1993
2794Policy and practice for the protection of groundwater : regional appendix Welsh region
2795Possible replacements for the biochemical oxygen demand (BOD) test and suspended solids as measures of effluent and water quality : interim report (402/6/HO)
2796Predicted high and low tide tables 2001 : Southern region
2797Predicting bathing water quality
2798Preventing pollution on industrial sites (Bilingual Welsh)
2799Procedures and results of biochemical oxygen demand tests carried out at the Crossness laboratory 1990
2800Procurement legislation and the NRA : a brief guide