Language behavior of mentally retarded children-Medical Times, September 1960

Language behavior of mentally retarded children-Medical Times, September 1960, Box: 1, Folder: 48. Personal Papers of Richard Schiefelbusch, PP 458. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/266116 Accessed December 25, 2025.