TY  - RPRT
TI  - Correlation chart of lower and upper Cretaceous Blackleaf Formation, eastern Pioneer Mountains, southwestern Montana, to Drummond, central-western Montana
AU  - T. S. Dyman
AU  - R. G. Tysdal
AU  - C. A. Wallace
AU  - S.E. Lewis
PY  - 1994
DO  - 10.3133/i2478
UR  - https://pubs.usgs.gov/publication/i2478
ID  - i2478
ER  -