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Some of the next articles are maybe not open access.
Forest Recreation Propositional Inventory. Joyce M. Nielson and William R. Catton, Jr. Journal of Leisure Research, Vol. 3, No. 3, Summer 1971, pp. 178-193. The National Recreation and Park Association, 1700 Pennsylvania Avenue, N.W., Washington, D.C. 20006. $2.50
Travel Research Bulletin, 1972 openaire +1 more source
