TY  - RPRT
TI  - Maps showing distribution, composition, and age of early and middle Cenozoic volcanic centers in Oregon and Washington
AU  - R. G. Luedke
PY  - 1998
DO  - 10.3133/i2291d
UR  - https://pubs.usgs.gov/publication/i2291D
ID  - i2291D
ER  -