The economics and social values of forests for recreation and nature tourisma: A research overview. Cost Action E33: Forests for Recreation and Nature Tourism(FORREC)(pdf, http://www.openspace.eca.ac.uk/coste33/outputs.htm)

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The economics and social values of forests for recreation and nature tourisma: A research overview. Cost Action E33: Forests for Recreation and Nature Tourism(FORREC)(pdf, http://www.openspace.eca.ac.uk/coste33/outputs.htm)

Simpson, M.; Pichler, V.; Tyrväinen, L.; Collins, K.; Martin, S.; Strange, N.; Vuletic, D. (2008)

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