Assistive communication aids, for the speech impaired
| Other Authors: | |
|---|---|
| Format: | Book | 
| Language: | English | 
| Published: | 
        Edinburgh
          Churchill Livingstone
    
        1987.
     | 
| Subjects: | 
| Other Authors: | |
|---|---|
| Format: | Book | 
| Language: | English | 
| Published: | 
        Edinburgh
          Churchill Livingstone
    
        1987.
     | 
| Subjects: |