TY - RPRT TI - Mineral occurrence map of the Medfra quadrangle, Alaska AU - C. E. Schwab AU - W. W. Patton AU - E. J. Moll PY - 1981 DO - 10.3133/ofr80811b UR - https://pubs.usgs.gov/publication/ofr80811B ID - ofr80811B ER -