Robinson, Halbert B. The mentally retarded child : a psychological approach / [by] Halbert B. Robinson [and] Nancy M. Robinson. - New York : McGraw-Hill, [1965] - McGraw-Hill series in psychology . Bibliography: p. 547-623. LCCN: 64025176 //r84 Subjects--Topical Terms: Mental retardation.Mentally handicapped children. LC Class. No.: RC570 / .R6 Dewey Class. No.: 136.766