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276River quality in England and Wales : a report of the 1990 survey
277Snapshots of the environment : understanding coastal water quality
278The Influence of Variations in Flow on General Quality Assessment of Rivers
279The Mersey estuary : a report on environmental quality
280'Sea Vigil' water quality monitoring : the East coast 1992-1993
281Catches of migratory fish in the River Don, Aberdeenshire
282Stream survey and assessment in the Ashford and Folkestone areas
283Lakes, Ponds and Reservoirs in the Southern Region (NRA)
284The 1990 river and estuary classification survey of England and Wales
285The evaluation of an orion ammonium ion selective electrode (220/15/T)
286Anthropogenic Impacts on the Hydrology of Rivers and Lochs
287Model For Investigating The Impacts Of Groundwater Abstraction
288Operational mechanisms for the protection and enhancement of headwaters
289The Impact of Grazing and Upland Management on Erosion and Runoff
290Water resources for the future : a strategy for Midlands Region
291Water resources for the future : a strategy for Southern region
292The feasibility of biomanipulation in reservoirs and deeper lakes : draft final report
293Distribution of Azolla in the Great Ouse catchment
294Investigation into the cause of high phenols in Budleigh Brook (1998)
295Non-compliance of the Bidwell Brook with river quality objectives
296An investigation into the sewage system and storm overflow at Beer (1997)
297River Axe Fish Study - Evaluation of Fish Movements in the Estuary
298Sustainable urban drainage : an introduction : protecting the quality of our environment
299Identification of water quality problems in the Strat and Neet catchments
300Method for the assessment of river water quality using benthic macroinvertebrates