Communication for the speechless an introduction to nonvocal communication systems for the severely communicatively handicapped

書誌詳細
第一著者:	Silverman, Franklin H. 1933-
フォーマット:	図書
言語:	英語
出版事項:	Englewood Cliffs, NJ Prentice-Hall c1980.
主題:	Speech disorders. Communication devices for people with disabilities. People with disabilities > Means of communication.