TY - RPRT TI - Preliminary geologic map of the Hot Sulphur Springs SW quadrangle, Grand County, Colorado AU - G. A. Izett AU - C.S.V. Barclay PY - 1964 DO - 10.3133/mf291 UR - https://pubs.usgs.gov/publication/mf291 ID - mf291 ER -