TY - RPRT TI - Rock, stream sediment, and heavy-mineral concentrate geochemical data from Unga and western Popof Islands, Alaska Peninsula, Alaska: Chapter 6 in A geological and geophysical study of the gold-silver vein system of Unga Island, Southwestern Alaska AU - Frederic H. Wilson AU - Stan E. Church AU - Elizabeth Bailey PY - 1999 DO - 10.3133/70180395 UR - https://pubs.usgs.gov/publication/70180395 ID - 70180395 ER -