GSA-Steinberg, Genrich S. South Kamchatka earth crust and structural position of Quaternary volcanos, 1965, Box: 78, Folder: 21. Hollis Hedberg papers, RH MS 546. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/151173 Accessed November 28, 2024.