Relations Entre Certains Phenomes Sedimentaires et la Position da Front Superieur de Schistosite (Belgique et Regious Limitrophes), 1963, Box: 32, Folder: 30. J. Harlan Johnson papers, RH MS 735. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/53936 Accessed December 26, 2024.