TY  - RPRT
TI  - Identifying and assessing ecotourism visitor impacts at selected protected areas in Costa Rica and Belize
AU  - T. A. Farrell
AU  - J. L. Marion
PY  - 2002
DO  - 10.1017/s0376892901000224
UR  - https://pubs.usgs.gov/publication/5224123
ID  - 5224123
ER  -