TY  - RPRT
TI  - Preliminary geologic map of the west half of the Vancouver (Wa.-Ore.) 1° x 2° quadrangle, Oregon
AU  - Ray E. Wells
AU  - A. R. Niem
AU  - N. S. MacLeod
AU  - P. D. Snavely
AU  - W. A. Niem
PY  - 1983
DO  - 10.3133/ofr83591
UR  - https://pubs.usgs.gov/publication/ofr83591
ID  - ofr83591
ER  -