TY  - RPRT
TI  - Development of a spatial analysis method using ground-based repeat photography to detect changes in the alpine treeline ecotone, Glacier National Park, Montana, U.S.A.
AU  - W. Roush
AU  - Jeffrey S. Munroe
AU  - D.B. Fagre
PY  - 2007
DO  - 10.1657/1523-0430(2007)39[297:doasam]2.0.co;2
UR  - https://pubs.usgs.gov/publication/70029799
ID  - 70029799
ER  -