Part of the University of Kansas. Kenneth Spencer Research Library Repository
AAPG Padula, Brazilian Oil Shale, Box: 56, Folder: 28. Hollis Hedberg papers, RH MS 546. University of Kansas. Kenneth Spencer Research Library.
AAPG Padula, Brazilian Oil Shale, Box: 56, Folder: 28. Hollis Hedberg papers, RH MS 546. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/150700 Accessed June 23, 2025.
