4401 | River habitats in England and Wales : a national overview : river habitat survey report no 1 |
4402 | Effects of Canoeing on Fish Stocks and Angling |
4403 | Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority |
4404 | The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Chalk Of Lincolnshire; |
4405 | A Review of Grayling Ecology, Status and Management Practice Recommendations for Future Managemetn in England and Wales |
4406 | Guidelines on statutory returns : Freshwater Fish Directive |
4407 | Teddington flow survey 1989 |
4408 | Assessing the impact of dewatering on water resources |
4409 | The use and design of oil separators in surface water drainage systems |
4410 | The utilisation of stick-pile otter holts in south east Wales |
4411 | Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS) |
4412 | Evaluation of FRONTIERS accumulation forecasts in the NRA Thames and North West regions : final report of the Joint Met |
4413 | River Usk barrage position statement, 4th August 1993 |
4414 | The River Ash : enhancement project |
4415 | UK Sewage Sludge Survey |
4416 | Substitute Liquid Fuels Used In Cement Kilns - Life Cycle Analysis |
4417 | Cley sea defences |
4418 | Environmental pilot audit : National Rivers Authority Anglian region central area : Brampton Huntingdon |
4419 | Improving the Environment Agency's contribution to wetland bird populations |
4420 | The Waterways Bird Survey |
4421 | Groundwater-surface Water Interactions in the Hyporheic Zone |
4422 | Time of travel on the River Lee under high and medium flow : appendix b : time of travel on the small River Lee |
4423 | The management of the water resources of the Little Ouse groundwater unit |
4424 | Special wastes : a technical guidance note on their definition and classification. Vol 1 : legislation framework and assessment methodology |
4425 | Dee stock assessment programme : annual report 1989 - 1991 |