51 | Modelling phytoplankton development in the proposed Cardiff Bay Barrage
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52 | Charging for discharges scheme : guidance to the agricultural industry |
53 | Snapshots of the environment : integrated river basin management |
54 | Water from the River Dee : a working partnership |
55 | River quality in England and Wales : a report of the 1990 survey |
56 | Snapshots of the environment : understanding coastal water quality |
57 | The 1990 river and estuary classification survey of England and Wales |
58 | Policy and practice for the protection of groundwater : regional appendix Welsh region |
59 | Sustainable urban drainage : an introduction : protecting the quality of our environment |
60 | Snapshots of the environment : managing our freshwater fisheries |
61 | The National Groundwater and Contaminated Land Centre (NGWCLC) |
62 | Contribution of small streams to potential fish production in the Conwy catchment |
63 | Snapshots of the environment : a new environmental approach |
64 | The utilisation of stick-pile otter holts in south east Wales |
65 | The River Tywi catchment management plan : action plan (bilingual) |
66 | A strategy for the management of salmon in England and Wales |
67 | Water quality 2000 : a strategy for the water quality function |
68 | Wetlands for Wales : a strategy for the third millenium |
69 | The Occurrence of Sheep Dip Pesticides in Environmental Waters June 1997 |
70 | Policy and practice for the protection of groundwater |
71 | The quality of rivers in England and Wales (1990 to 1995) |
72 | Doses from the consumption of Cardiff Bay flounder containing organically-bound tritium |
73 | Water resources development strategy : the Resplan Model. Supplementary report no. 7 |
74 | Policy and practice for the protection of groundwater |
75 | Policy and practice for the protection of groundwater - NRA leaflet |