Preferred signs : For instructional purposes
| Údar corparáideach: | |
|---|---|
| Formáid: | LEABHAR |
| Teanga: | English |
| Foilsithe / Cruthaithe: |
Texas, U.S.A. :
Texas Education Agency.,
1978.
|
| Ábhair: |
| Cur síos fisiciúil: | xx, 500 páginas ; 28 cm |
|---|