TY  - BOOK
AU  - Martens,Elise H.
TI  - Group activities for mentally retarded children: a symposium,
AV  - L111 .A6 1933, no. 7
U1  - 371.92 
PY  - 1933///
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Children with mental disabilities
KW  - Education
N1  - At head of title: United States Department of the Interior. Harold L. Ickes, secretary. Office of Education, William John Cooper, commissioner; Includes bibliographies
ER  -