TY  - RPRT
TI  - Geologic Map of the Saint Helens Quadrangle, Columbia County, Oregon, and Clark and Cowlitz Counties, Washington
AU  - Russell C. Evarts
PY  - 2004
DO  - 10.3133/sim2834
UR  - https://pubs.usgs.gov/publication/sim2834
ID  - sim2834
ER  -