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2. The Economics of Natural Environments: Studies in the Valuation of Commodity and Amenity Resources;Krutilla,1975
3. Option demand and consumer surplus: Further comments;Cichetti;Quart. J. Econom.,1971
4. Environmental preservation, uncertainty and irreversibility;Arrow;Quart. J. Econom.,1974
5. Public Lands Politics: Interest Group Influence on the Forest Service and the Bureau of Land Management;Culhane,1981