RT Journal Article SR Electronic T1 The role of special devices in the management of the handicapped child JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 925 OP 925 VO 110 IS 8 A1 D. A. Hobson A1 E. Trefler A1 R. E. Fulford A1 R. M. Letts YR 1974 UL http://www.cmaj.ca/content/110/8/925.abstract