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6451Foot and Mouth Disease Epidemic. Disposal of culled stock by burial : guidance and reference data for the protection of controlled waters
6452Mount's Bay and Lands End streams catchment river water quality classification 1991
6453Herbarium Image: Luzula pilosa
6454Herbarium Image: Tofieldia pusilla
6455Herbarium Image: Luzula spicata
6456Herbarium Image: Tofieldia pusilla
6457Herbarium Image: Carex bigelowii
6458Herbarium Image: Carex arenaria
6459Herbarium Image: Elodea sp.
6460Herbarium Image: Carex aquatilis
6461Herbarium Image: Persicaria amphibia
6462Herbarium Image: Persicaria amphibia
6463Herbarium Image: Persicaria hydropiper
6464Herbarium Image: Eleocharis palustris
6465Herbarium Image: Persicaria amphibia
6466Herbarium Image: Schoenoplectus lacustris
6467Herbarium Image: Schoenoplectus tabernaemontani
6468Best Management Practices to Reduce Diffuse Pollution from Agriculture
6469A report on the use of pesticides at two Hampshire watercress farms
6470A field guide to the British seaweeds : as required for assistance in the classification of water bodies under the Water Framework Directive
6471Radiation Experiments on Aquatic Organisms
6472Impact Of Conifer Harvesting And Replanting On Upland Water Quality
6473Porth, Gluvian and Menalhyl catchment river water quality classification 1990
6474River Cober catchment river water quality classification 1991
6475River Fal catchment river water quality classification 1990