1. A guide to countryside interpretation. Part 1. Principles of countryside interpretation and interpretive planning;Aldridge,1975
2. Trail planning and layout;Ashbaugh,1965
3. The disturbance of hill red deer by walkers and climbers. Brathay Exploration Group. Interim report;Barrow,1974
4. The changing face of Stac Polly;Bayfield;Climber and Rambler,1972
5. Simple automatic people counters for gates and stiles;Bayfield;Recreational News Supplement,1972