TY - RPRT TI - Geologic map of the Challis 1 degree x 2 degree Quadrangle, Idaho AU - Frederick S. Fisher AU - D. H. McIntyre AU - Kathleen M. Johnson PY - 1983 DO - 10.3133/ofr83523 UR - https://pubs.usgs.gov/publication/ofr83523 ID - ofr83523 ER -