TY - RPRT TI - Geology and coal resources of the Hanging Woman Creek Study Area, Big Horn and Powder River Counties, Montana AU - William Craven Culbertson AU - Joseph R. Hatch AU - Ronald H. Affolter PY - 1978 DO - 10.3133/ofr78506 UR - https://pubs.usgs.gov/publication/ofr78506 ID - ofr78506 ER -