TY  - RPRT
TI  - Optical calcite deposits in Park and Sweet Grass Counties, Montana
AU  - W.C. Stoll
AU  - Frank C. Armstrong
PY  - 1958
DO  - 10.3133/b1042m
UR  - https://pubs.usgs.gov/publication/b1042M
ID  - b1042M
ER  -