TY - RPRT TI - A review and synthesis of recreation ecology research findings on visitor impacts to wilderness and protected natural areas AU - Jeffrey L. Marion AU - Yu-Fai Leung AU - Holly Eagleston AU - Kaitlin Burroughs PY - 2016 DO - 10.5849/jof.15-498 UR - https://pubs.usgs.gov/publication/70175444 ID - 70175444 ER -