TY  - RPRT
TI  - 2014 National Park visitor spending effects: economic contributions to local communities, states, and the nation
AU  - Catherine Cullinane Thomas
AU  - Christopher Huber
AU  - Lynne Koontz
PY  - 2015
UR  - https://pubs.usgs.gov/publication/70148496
ID  - 70148496
ER  -