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526Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1996
527Preliminary modelling of water storage and transfers in the Anglian region : supporting documentation for the regional water resources strategy May 1993
528Continuous water quality monitoring results collected from the river Torridge at Cockshilhay and Beam Bridge for the EU UWWTD
529Water quality objectives: procedures used by the NRA for the purpose of surface waters river ecosystem) (classification) regulations 1994
530Mercury, methylmercury and copper in the River Yare, Norfolk : summary of a report to the National Rivers Authority, Anglian Region
531Second interim report on the environmental impacts of the drought on Yorkshire's rivers April 1995 to April 1996
532Interim report on the environmental impacts of the drought on Yorkshire rivers April 1995 to April 1996
533A report on the 1992 strategic stock assessment survey of the upper Eden catchment with particular reference to salmonids
534Conservation and recreation : the Wye challenge : towards a management strategy for the River Wye : summary report (bilingual)
535An assessment of the impact of Berkhamsted and Maple Lodge STWs on the Grand Union canal based on macroinvertebrate surveys
536An Assessment of Cormorant Depredation on Stillwater Coarse Fish Populations in the Lea and Colne Valleys of the Thames Catchment
537Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document
538A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89
539An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96
540An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95]
541An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge
542Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example
543A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994
544A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock
545Bioccumulation of halogenated compounds by limpets and fucoid seaweeds in the vicinity by the Black Rock sewage outfall, Weston-Super-Mare
546A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake
547Health effects of sea bathing (WMI 9021) - Phase III final report to the Department of the Environment
548Procedure for quality assurance for RIVPACS compatible macro-invertebrate samples analysed to the taxonomic level needed for the BMWP-score system
549Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank
550The Economics of No-Spray Zones - a Study of the Risks and Benefits of Pesticide No-Spray Restrictions