Text and Data Mining valid from 2017-12-01
Received: 11 July 2017
Accepted: 17 October 2017
First Online: 1 December 2017
: Department of Human Dimensions of Natural Resources, Colorado State University.
: This study uses public, aggregated secondary data and is exempt from standard human subjects’ ethics approval.
: The author consents to publication.
: The author declares that he has no competing interests.
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