TY - RPRT TI - Map showing gold determined by atomic absorption and spectrographically determined silver in stream sediments, Ketchikan and Prince Rupert quadrangles, Alaska AU - Richard D. Koch AU - Raymond L. Elliott AU - M. J. Diggles PY - 1978 DO - 10.3133/ofr7873g UR - https://pubs.usgs.gov/publication/ofr7873G ID - ofr7873G ER -