TY  - RPRT
TI  - Preliminary geologic map of the Black River quadrangle, east-central Alaska
AU  - Earl E. Brabb
AU  - Michael Churkin
PY  - 1969
DO  - 10.3133/ofr6922
UR  - https://pubs.usgs.gov/publication/ofr6922
ID  - ofr6922
ER  -