TY  - RPRT
TI  - Geologic mapping in Alaska, U.S. Geological Survey, post 1930, scales 1:20,000 to 1:63,360
AU  - Susan Bartsch-Winkler
PY  - 1976
DO  - 10.3133/ofr76552
UR  - https://pubs.usgs.gov/publication/ofr76552
ID  - ofr76552
ER  -