TY - RPRT TI - Contributions to economic geology (short papers and preliminary reports), 1926, Part II, Mineral fuels. The geology of the Ingomar anticline, Treasure and Rosebud counties, Montana AU - K. C. Heald PY - 1927 DO - 10.3133/b786a UR - https://pubs.usgs.gov/publication/b786A ID - b786A ER -