TY - RPRT TI - Altered volcanic ash partings in the C coal bed, Ferron Sandstone member of the Mancos Shale, Emery County, Utah AU - Don M. Triplehorn AU - Bruce Forbes Bohor PY - 1981 DO - 10.3133/ofr81775 UR - https://pubs.usgs.gov/publication/ofr81775 ID - ofr81775 ER -