Beck, Helen Louise. The closed, short-term group: a treatment adjunct for parents of mentally retarded children [by] Helen L. Beck. - [Washington] U.S. Dept. of Health, Education, and Welfare, Welfare Administration, Children's Bureau, 1964. - 8 p. 26 cm. LCCN: hew64000107 Subjects--Topical Terms: Children with mental disabilities--Care. LC Class. No.: HV891 / .B4