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3951Switch mechanisms between alternative stable states in freshwater communities (01/574/1/A)
3952River habitats in England and Wales : a national overview : river habitat survey report no 1
3953Effects of Canoeing on Fish Stocks and Angling
3954Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority
3955The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Chalk Of Lincolnshire;
3956A Review of Grayling Ecology, Status and Management Practice Recommendations for Future Managemetn in England and Wales
3957Guidelines on statutory returns : Freshwater Fish Directive
3958Teddington flow survey 1989
3959Assessing the impact of dewatering on water resources
3960The use and design of oil separators in surface water drainage systems
3961The utilisation of stick-pile otter holts in south east Wales
3962Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS)
3963River Usk barrage position statement, 4th August 1993
3964The River Ash : enhancement project
3965UK Sewage Sludge Survey
3966Substitute Liquid Fuels Used In Cement Kilns - Life Cycle Analysis
3967Cley sea defences
3968Environmental pilot audit : National Rivers Authority Anglian region central area : Brampton Huntingdon
3969Improving the Environment Agency's contribution to wetland bird populations
3970The Waterways Bird Survey
3971Groundwater-surface Water Interactions in the Hyporheic Zone
3972Time of travel on the River Lee under high and medium flow : appendix b : time of travel on the small River Lee
3973The management of the water resources of the Little Ouse groundwater unit
3974Special wastes : a technical guidance note on their definition and classification. Vol 1 : legislation framework and assessment methodology
3975Dee stock assessment programme : annual report 1989 - 1991