Recreation impacts: a synthesis of ecological and social research. Vaske, J. & Graefe, A. Ph.D. Thesis.
bibtex   
@phdthesis{vaske_recreation_nodate,
	title = {Recreation impacts: a synthesis of ecological and social research.},
	language = {en},
	author = {Vaske, J.J. and Graefe, A.R.},
}

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