Assistive communication aids, for the speech impaired
| Andre forfattere: | |
|---|---|
| Format: | Bog | 
| Sprog: | English | 
| Udgivet: | 
        Edinburgh
          Churchill Livingstone
    
        1987.
     | 
| Fag: | 
| Andre forfattere: | |
|---|---|
| Format: | Bog | 
| Sprog: | English | 
| Udgivet: | 
        Edinburgh
          Churchill Livingstone
    
        1987.
     | 
| Fag: |