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2. Anon. (1988).Fertiliser Recommendations. MAFF Reference Book 209 (5th Edition). HMSO, London.
3. Anon. (1989). Announcement of candidate areas for pilot nitrate scheme.News release MAFF.
4. Anon. (1994a). Minister launches new nitrate sensitive areas.News Release MAFF.
5. Anon. (1994b). Designation of vulnerable zones in England and Wales under the EC Nitrate Directive (91/636).Consultation Document MAFF.