| 26 | Anglian region state of the environment report : the IPC perspective |
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| 27 | The development of new techniques for the monitoring of ammonia in water |
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| 28 | Assessment of the impact of discharges from Meldon Quarry on the water quality of the West Okement River |
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| 29 | The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Chalk Of Berkshire And The Chilterns |
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| 30 | Assessment of the performance of the BMWP scoring system against biological targets and the determination of significant change |
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| 31 | The National Rivers Authority's response to the sixteenth report of the Royal Commission on Environmental Pollution on freshwater quality |
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| 32 | Investigation into the probable cause of the 1999 failure of the EC bathing waters directive at Seaton (Devon) beach (70210103) (2000) |
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| 33 | Pollution control on the River Alt |
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| 34 | Achieving the quality (Bilingual) : Sicrhau Ansawdd (Bilingual) |
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| 35 | Phosphate in the cut-off channel |
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| 36 | Devon area internal report - the kingsbridge estuary - survey of the benthic microinvertebrate infauna (october 1990) for the proposed classification of estuaries in the south western region |
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| 37 | Rivers of the Isle of Wight |
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| 38 | River water quality in the Midlands 1997 |
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| 39 | Water Quality of the Humber Estuary 1986 |
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| 40 | Investigation to determine if the soakaway from the Stowford Farm caravan site is having an impact on the biological community of the Colam stream |
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| 41 | Hydropower developments and the National Rivers Authority |
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| 42 | River water quality in the Midlands 1998 |
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| 43 | Report on the control of discharges of titanium dioxide waste to the Humber Estuary : main report |
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| 44 | The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment |
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| 45 | Clouding: the issue. An appraisal of the effects of turbidity in aquatic systems |
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| 46 | Riverside litter : results of the 1990 campaign and a strategy for the future |
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| 47 | The Possible effects on migratory fish in the River Dee of increased water abstraction |
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| 48 | An investigation into the water quality of the River Waldon during wet weather |
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| 49 | Investigation into the 1999 failure of the European Community bathing waters directive at Beer beach (2001) |
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| 50 | An investigation into the effects of Alton sewage works on the River Wey North |
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