TY - RPRT TI - Potassium-argon determinations in the Ketchikan and Prince Rupert quadrangles, southeastern Alaska AU - James G. Smith AU - Michael F. Diggles PY - 1981 DO - 10.3133/ofr7873n UR - https://pubs.usgs.gov/publication/ofr7873N ID - ofr7873N ER -