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2. Working Group on Groundwater — Guidance Document GW4: Guidance on Pressures and Impacts Methodology;Anonymous,2003
3. Working Group on Groundwater — Guidance Document GW8: Methodology for Risk Characterisation of Ireland's Groundwater;Anonymous,2004
4. Implementing the action programme for nitrate vulnerable zones in Scotland: farming practices and awareness;Barnes,2007
5. The scope for regulatory incentives to encourage increased efficiency of input use by farmers;Barnes;Journal of Environmental Management,2009