TY - RPRT TI - Subsurface stratigraphy of Lower Mesozoic and Upper Paleozoic formations in the basin area of south-central Montana AU - Herbert D. Hadley AU - L.S. Gardner AU - C.P. Rogers PY - 1945 DO - 10.3133/oc19 UR - https://pubs.usgs.gov/publication/oc19 ID - oc19 ER -