TY  - RPRT
TI  - Geology of the Fourmile pegmatite area, Custer County, South Dakota
AU  - Jack Allison Redden
PY  - 1955
DO  - 10.3133/ofr55145
UR  - https://pubs.usgs.gov/publication/ofr55145
ID  - ofr55145
ER  -