Role of Methane in Geology - Oral Presentation Copy of Uppsala Paper and Xerox of Presentation Cards, Sept. 12, 1977, Box: 82, Folder: 4. Hollis Hedberg papers, RH MS 546. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/151369 Accessed June 01, 2024.