TY - RPRT TI - Apparent episodicity of magmatic activity based on radiometric age determination: A section in The United States Geological Survey in Alaska: Accomplishments during 1980 AU - Frederic H. Wilson AU - Nora B. Shew PY - 1982 DO - 10.3133/70180224 UR - https://pubs.usgs.gov/publication/70180224 ID - 70180224 ER -