TY  - RPRT
TI  - Proceedings of the U.S. Geological Survey Seventh Biennial Geographic Information Science Workshop, Denver, Colorado, May 12-16, 2008
PY  - 2008
DO  - 10.3133/sir20085074
UR  - https://pubs.usgs.gov/publication/sir20085074
ID  - sir20085074
ER  -