Introduction to sign teaching and the use of communication aids
by Stephen von Tetzchner, Stephen Von Tetzchner, Harald Martinsen

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Communication devices for people with disabilitiesSign languageSign languages, Braille & other linguistic communicationTeaching of physically disabled personsCommunication devices for theDisabledLanguage disordersVisual communicationAides audiovisuellesTroubles de la CommunicationGebärdenspracheUnterricht