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4826Herbarium Image: Impatiens parviflora
4827Herbarium Image: Juncus tenuis
4828Herbarium Image: Myosotis laxa subsp. caespitosa
4829Herbarium Image: Scorpidium scorpioides
4830Herbarium Image: Utricularia minor
4831Herbarium Image: Utricularia vulgaris
4832Policy and practice for the protection of groundwater : North West region : 2nd edition, 1995
4833Salmon action plan consultation : River Ribble, September 1999
4834River Ribble juvenile fish stock assessment 2003, with particular reference to salmonids
4835The Ribble Estuary 1992 surveys : summary of results
4836UK national monitoring plan : regional report for England and Wales : estuarine and intermediate sites (1991 to 1995)
4837Savick Brook electrofishing survey 2001
4838Wyre LEAP first annual review
4839An assessment of mercury contamination in the Red River catchment : final draft report
4840Red River (R23A003) EC Dangerous Substance Directive failure 1993 : final draft report
4841Mouth of a river lamprey,
4842Red River : catchment action plan
4843Red River, Portreath, Bolingey and Perranporth catchment river water quality classification 1990
4844Red River catchment river water quality classification 1991
4845Wastewater disinfection field trials (231/4/SW)
48461997 general quality assessment (GQA) and river ecosystem (RE) non-compliance : Devon area
4847A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
4848An investigation into possible causes of poor water quality at Nymphayes Bridge (R30D009) on the Gissage Lake
4849An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
4850An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]