TY  - RPRT
TI  - Visitor spending effects: assessing and showcasing America's investment in national parks
AU  - Lynne Koontz
AU  - Catherine Cullinane Thomas
AU  - Pamela Ziesler
AU  - Jeffrey Olson
AU  - Bret Meldrum
PY  - 2017
DO  - 10.1080/09669582.2017.1374600
UR  - https://pubs.usgs.gov/publication/70194202
ID  - 70194202
ER  -