RT Journal Article SR Electronic T1 The Mentally Retarded Child. Essays based on a study of the higher nervous functioning of child-oligophrenics JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 206 OP 206 DO 10.1136/adc.39.204.206 VO 39 IS 204 YR 1964 UL http://adc.bmj.com/content/39/204/206.1.abstract AB