USGS OF 55-22
Title:Petrology of Umnak and Bogoslof Islands, Alaska
Authors:Byers, F.M., Jr.
Publisher:U.S. Geological Survey
Ordering Info:USGS Publications Warehouse
Byers, F.M., Jr., 1955, Petrology of Umnak and Bogoslof Islands, Alaska: U.S. Geological Survey Open-File Report 55-22, 189 p., 2 sheets.