TY - RPRT TI - New ages on intrusive rocks and altered zones in the Alaska Peninsula: A section in The United States Geological Survey in Alaska: Accomplishments during 1977 AU - Frederic H. Wilson AU - Robert L. Detterman AU - Miles L. Silberman PY - 1978 DO - 10.3133/70180237 UR - https://pubs.usgs.gov/publication/70180237 ID - 70180237 ER -