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6801Salmon Migration and River Flow - Results of Salmon Radio Tracking Studies on Six Rivers in South West England: Technical Summary
6802Environmental quality standards to protect identified uses of controlled waters
6803Mount's Bay and Lands End streams catchment river water quality classification 1991
6804Herbarium Image: Luzula pilosa
6805Herbarium Image: Tofieldia pusilla
6806Herbarium Image: Luzula spicata
6807Herbarium Image: Tofieldia pusilla
6808Herbarium Image: Carex bigelowii
6809Herbarium Image: Carex arenaria
6810Herbarium Image: Elodea sp.
6811Herbarium Image: Carex aquatilis
6812Herbarium Image: Persicaria amphibia
6813Herbarium Image: Persicaria amphibia
6814Herbarium Image: Persicaria hydropiper
6815Herbarium Image: Eleocharis palustris
6816Herbarium Image: Persicaria amphibia
6817Herbarium Image: Schoenoplectus lacustris
6818Herbarium Image: Schoenoplectus tabernaemontani
6819Best Management Practices to Reduce Diffuse Pollution from Agriculture
6820A report on the use of pesticides at two Hampshire watercress farms
6821A field guide to the British seaweeds : as required for assistance in the classification of water bodies under the Water Framework Directive
6822Radiation Experiments on Aquatic Organisms
6823Impact Of Conifer Harvesting And Replanting On Upland Water Quality
6824Porth, Gluvian and Menalhyl catchment river water quality classification 1990
6825River Cober catchment river water quality classification 1991