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High and Low Technology Approaches in the Development of Communication Systems for Severely Physically Handicapped Persons

Gregg C. Vanderheiden

出版	Trace Research and Development Center on Communication, Control, and Computer Access for Handicapped Individuals, University of Wisconsin-Madison, 1984
URL	http://books.google.com.hk/books?id=X3ewHAAACAAJ&hl=&source=gbs_api