Augmentative and alternative communication systems for persons with moderate and severe disabilities
By: by Diane Baumgart, Jeanne Johnson, and Edwin Helmstetter ; [foreword by Kathleen Stremel].
Contributors: Johnson, Jeanne, 1951-; Helmstetter, Edwin.
Publisher: P.H. Brookes Pub. Co.
Published: 1990
Place of publication: Baltimore
Language: eng
Number of pages: 254
Subjects: Communication devices for people with disabilities
Notes: Includes bibliographical references.