Investigation of some relationships between language and defective articulation among subjects with normal intelligence and subjects with mental retardation, 190 - 01 - 04 - LD1017 .C8133 1973 A3, Volume: Archives LD1017 .C8133 1973 A3; Volume: Carlson Library Level A Main Quarto Collection LC4602 .A3. Clarion University Archives.

Investigation of some relationships between language and defective articulation among subjects with normal intelligence and subjects with mental retardation, 190 - 01 - 04 - LD1017 .C8133 1973 A3, Volume: Archives LD1017 .C8133 1973 A3; Volume: Carlson Library Level A Main Quarto Collection LC4602 .A3. Clarion University Archives. http://as-clarion.klnpa.org/repositories/2/resources/307 Accessed December 24, 2025.