TY  - RPRT
TI  - USGS GeoData Digital Raster Graphics
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 2001
DO  - 10.3133/fs08801
UR  - https://pubs.usgs.gov/publication/fs08801
ID  - fs08801
ER  -