TY  - RPRT
TI  - Preliminary geologic map of the Mount Vernon 7 1/2' Quadrangle, Skagit County, Washington
AU  - David P. Dethier
AU  - John T. Whetten
PY  - 1981
DO  - 10.3133/ofr81105
UR  - https://pubs.usgs.gov/publication/ofr81105
ID  - ofr81105
ER  -