TY  - RPRT
TI  - Distribution and thickness of Devonian rocks in Williston basin and in central Montana and north-central Wyoming
AU  - Charles A. Sandberg
PY  - 1961
DO  - 10.3133/b1112d
UR  - https://pubs.usgs.gov/publication/b1112D
ID  - b1112D
ER  -