51 | Contaminants entering the sea : a report on contaminant loads entering the seas around England and Wales 1990-1993 |
52 | NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group |
53 | Modelling phytoplankton development in the proposed Cardiff Bay Barrage
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54 | Landfill and the water environment : NRA position statement |
55 | Charging for discharges scheme : guidance to the agricultural industry |
56 | Snapshots of the environment : integrated river basin management |
57 | Water from the River Dee : a working partnership |
58 | Snapshots of the environment : understanding coastal water quality |
59 | The 1990 river and estuary classification survey of England and Wales |
60 | Policy and practice for the protection of groundwater : regional appendix Welsh region |
61 | Sustainable urban drainage : an introduction : protecting the quality of our environment |
62 | Snapshots of the environment : managing our freshwater fisheries |
63 | The National Groundwater and Contaminated Land Centre (NGWCLC) |
64 | Contribution of small streams to potential fish production in the Conwy catchment |
65 | Policy and practice for the protection of floodplains |
66 | The Use of a Hydroacoustic Counter for Assessing Salmon Stocks |
67 | Pesticides in the aquatic environment 1997 : executive summary |
68 | Snapshots of the environment : a new environmental approach |
69 | The utilisation of stick-pile otter holts in south east Wales |
70 | The River Tywi catchment management plan : action plan (bilingual) |
71 | A strategy for the management of salmon in England and Wales |
72 | Water quality 2000 : a strategy for the water quality function |
73 | Wetlands for Wales : a strategy for the third millenium |
74 | The Occurrence of Sheep Dip Pesticides in Environmental Waters June 1997 |
75 | Policy and practice for the protection of groundwater |