TY  - RPRT
TI  - Exploring visitor acceptability for hardening trails to sustain visitation and minimize impacts
AU  - K.L. Cahill
AU  - J. L. Marion
AU  - S.R. Lawson
PY  - 2008
DO  - 10.2167/jost804.0
UR  - https://pubs.usgs.gov/publication/5224933
ID  - 5224933
ER  -