Notes on Geology of the Province of Sul Do Save, Mozambique, and on Program and Conditions for Exploration of the Mozambique Gulf Oil Concession [Books and Bulletins], Box: 10, Folder: 30. Hollis Hedberg papers, RH MS 546. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/149252 Accessed February 16, 2025.