TY - RPRT TI - Geology and coal resources of T. 6 S., R. 51 W., unsurveyed, Umiat principal meridian, in the Cape Beaufort coal field, northwestern Alaska AU - James E. Callahan PY - 1971 DO - 10.3133/ofr7161 UR - https://pubs.usgs.gov/publication/ofr7161 ID - ofr7161 ER -