TY  - RPRT
TI  - 2017 National Park visitor spending effects : Economic contributions to local communities, states, and the Nation
AU  - Catherine M. Cullinane Thomas
AU  - Lynne Koontz
AU  - Egan Cornachione
PY  - 2018
UR  - https://pubs.usgs.gov/publication/70197532
ID  - 70197532
ER  -