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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
28Abandoned mines and the water environment : report of the National Rivers Authority
29Anglian region state of the environment report : the IPC perspective
30An investigation into the effect of Farnham STW on the River Wey
31The effect of the voluntary initiative on water quality
32An investigation into the effects of Woking STW on the River Wey
33Investigation into the probable cause of the 1999 failure of the EC bathing waters directive at Seaton (Devon) beach (70210103) (2000)
34The National Rivers Authority's response to the sixteenth report of the Royal Commission on Environmental Pollution on freshwater quality
35Assessment of the performance of the BMWP scoring system against biological targets and the determination of significant change
36Assessment of the impact of discharges from Meldon Quarry on the water quality of the West Okement River
37The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Chalk Of Berkshire And The Chilterns
38Rivers of the Isle of Wight
39Water Quality of the Humber Estuary 1986
40Pollution control on the River Alt
41Information [on the NRA Anglian Region]
42Environmental snapshot for the Anglian region 2002
43Environmental issues in the Midlands 1995/96
44Humber estuary : state of the environment 1998
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