| 151 | Managing the drought and water resources : key issues statements approved by the board of the NRA June 1992 |
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| 152 | The water environment - our cultural heritage |
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| 153 | Snapshots of the environment : enhancing biodiversity |
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| 154 | Information on the status of salmon stocks |
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| 155 | Fisheries Assessment Software within the Environment Agency |
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| 156 | Freshwater Algal Flora of the British Isles |
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| 157 | Green Household Index - The Eco-Cal |
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| 158 | Guardians of the water environment (bilingual document) |
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| 159 | The Restoration of Vegetation on Saltmarshes |
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| 160 | Surveying and tracking salmon in the sea |
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| 161 | Monitoring the trophic state of reservoirs
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| 162 | The Atlantic Salmon Trust Journal 2011 |
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| 163 | The Ecology of Four Scarce Wetland Molluscs |
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| 164 | Fish found in the tidal Thames |
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| 165 | The Sea Trout Stock Collapse, 1989-1992 |
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| 166 | Aerial view of the River Laboratory |
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| 167 | Achieving the quality (Bilingual) : Sicrhau Ansawdd (Bilingual) |
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| 168 | Achieving the quality : annex : programme of environmental obligations agreed by the Secretary of State for the Environment, Transport and the Regions and for Wales for individual water companies |
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| 169 | Determining The Causes Of 'Apparent Eutrophication' Effects |
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| 170 | Drought in the South : in depth |
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| 171 | Rivers of the Isle of Wight |
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| 172 | Beneath the town : safeguarding Bodmin from flooding |
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| 173 | Fish, fisheries and the Water Framework Directive |
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| 174 | Public participation and the Water Framework Directive |
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| 175 | Chew Magna : reducing the risk of flooding |
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