01028cam a22002411 4500 e 33001446 DLC 20260227111224.0 790803s1933 dcuaf 000 0 eng c e 33001446 (OCoLC)5238326 U.S. Office of Education NGenoU DLC L111 .A6 1933, no. 7 LC4661 .M3 371.92 Martens, Elise H. (Elise Henrietta), 1887- comp. Group activities for mentally retarded children; a symposium, compiled by Elise H. Martens, senior specialist in the education of exceptional children, Office of Education. Washington, U.S. Govt. Print. Off., 1933. v, 146 p. front., illus. 14 pl. on 7 l. 23 cm. At head of title: United States Department of the Interior. Harold L. Ickes, secretary. Office of Education, William John Cooper, commissioner. Includes bibliographies. Children with mental disabilities Education. 21372 21372