TY - RPRT TI - Preliminary geologic strip maps of the Park City and Phosphoria Formations, Vernal Phosphate area, Uintah County, Utah AU - E. M. Schell AU - J. R. Dyni PY - 1973 DO - 10.3133/ofr73248 UR - https://pubs.usgs.gov/publication/ofr73248 ID - ofr73248 ER -