1 | Clouding: the issue. An appraisal of the effects of turbidity in aquatic systems |
2 | Conservation in the Severn-Trent Region (NRA Severn-Trent 57)
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3 | Report on monitoring of environmental quality in the Severn Estuary |
4 | The Worcestershire Stour catchment : recommendations for statutory water quality objectives |
5 | National marine baseline survey 1995 : littoral cell 7 : Lands End to the Severn Estuary |