PROJ-28 Inst. on Expl. and Economics of Petroleum Ind. Dallas, March 8-9-10, 1967

PROJ-28 Inst. on Expl. and Economics of Petroleum Ind. Dallas, March 8-9-10, 1967, Box: 73, Folder: 14. Hollis Hedberg papers, RH MS 546. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/151040 Accessed February 22, 2026.