title: SELF-HELP DEVICES: COMMUNICATION AND VOCATIONS: SPECIAL TYPEWRITERS.
mesh_terms: D001766:Blindness; D003142:Communication; D006233:Persons with Disabilities; D006801:Humans; D009790:Occupations; D012656:Self-Help Devices
keywords: BLINDNESS; COMMUNICATION; HANDICAPPED; OCCUPATIONS; SELF-HELP DEVICES