"Problems of oil importing countries" papers by Charalainbos Contantinou, Pavel Kral, and T. L. Sankar, 1978, Box: 21, Folder: 34. Charles Heller papers, RH MS 314. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/493118 Accessed November 28, 2024.