TY  - RPRT
TI  - The influence of use-related, environmental, and managerial factors on soil loss from recreational trails
AU  - Nathaniel D. Olive
AU  - Jeffrey L. Marion
PY  - 2009
DO  - 10.1016/j.jenvman.2008.10.004
UR  - https://pubs.usgs.gov/publication/5224916
ID  - 5224916
ER  -