TY - RPRT TI - Map showing appraisal of mineral resource potential of RARE II proposed roadless areas in National forests, Colorado (exclusive of coal, oil, gas, and construction materials) AU - Ogden Tweto AU - Thomas August Steven PY - 1978 DO - 10.3133/ofr78894 UR - https://pubs.usgs.gov/publication/ofr78894 ID - ofr78894 ER -