ISSC-152 Talk on "Comments on Int. Guide to Strat. Classif, Terminology, and Usage." Caracas Talk, Box: 38, Folder: 19. Hollis Hedberg papers, RH MS 546. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/150120 Accessed November 28, 2024.