Communication for the speechless an introduction to nonvocal communication systems for the severely communicatively handicapped
| Príomhchruthaitheoir: | |
|---|---|
| Formáid: | LEABHAR |
| Teanga: | English |
| Foilsithe / Cruthaithe: |
Englewood Cliffs, N.J.
Prentice-Hall
c1980.
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| Ábhair: |