TY  - RPRT
TI  - Geologic map and sections, Burt mica mine, Custer County, South Dakota
AU  - John Wagstaff Adams
PY  - 1949
DO  - 10.3133/ofr4918
UR  - https://pubs.usgs.gov/publication/ofr4918
ID  - ofr4918
ER  -