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26The distribution of nutrients and phytoplankton in the North-East Irish Sea
27The development of new techniques for the monitoring of ammonia in water
28Contaminated land and the water environment : report of the National Rivers Authority
29Abandoned mines and the water environment : report of the National Rivers Authority
30Anglian region state of the environment report : the IPC perspective
31An investigation into the effect of Farnham STW on the River Wey
32The effect of the voluntary initiative on water quality
33An investigation into the effects of Woking STW on the River Wey
34Investigation into the probable cause of the 1999 failure of the EC bathing waters directive at Seaton (Devon) beach (70210103) (2000)
35The National Rivers Authority's response to the sixteenth report of the Royal Commission on Environmental Pollution on freshwater quality
36Assessment of the performance of the BMWP scoring system against biological targets and the determination of significant change
37Assessment of the impact of discharges from Meldon Quarry on the water quality of the West Okement River
38The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Chalk Of Berkshire And The Chilterns
39Rivers of the Isle of Wight
40Water Quality of the Humber Estuary 1986
41Pollution control on the River Alt
42Information [on the NRA Anglian Region]
43Environmental snapshot for the Anglian region 2002
44Environmental issues in the Midlands 1995/96
45Synoptic State of the Environment Monitoring
46Investigation to determine if the soakaway from the Stowford Farm caravan site is having an impact on the biological community of the Colam stream
47Achieving the quality (Bilingual) : Sicrhau Ansawdd (Bilingual)
48River water quality in the Midlands 1997
49River water quality in the Midlands 1998
50Hydropower developments and the National Rivers Authority