1. Comparative Effectiveness of Conservation Mechanisms;Colman,1992
2. Alternative Payments Systems for Management Agreements;Whitby,1990
3. Countryside Conflicts: The Politics of Farming, Forestry and Conservation;Lowe,1987
4. National Parks: Conservation or Cosmetics?;MacEwen,1982
5. The cost of conservation: a comparison of ESA and SSSI payment rates;Brotherton;Environment and Planning A,1991