TY - RPRT TI - Preliminary unevaluated map showing distribution of organic carbon in Meade Peak and Retort members of the Phosphoria Formation (Permian) in parts of Utah, Idaho, Wyoming, and Montana AU - Edwin K. Maughan PY - 1975 DO - 10.3133/ofr75101 UR - https://pubs.usgs.gov/publication/ofr75101 ID - ofr75101 ER -