Introduction to augmentative and alternative communication
by Stephen von Tetzchner, Von Tetzchner, Stephen Von Tetzchner, Harald Martinsen

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Communication devices for people with disabilitiesCommunicative disordersMeans of communicationPeople with disabilitiesSign languageSpeech & language disorders & therapySpeechSpecial Education - Communicative DisordersSpeech And Communication DisordersEducationLanguage Arts / Linguistics / LiteracyLanguage