Programmed learning aid for business communications
| Príomhchruthaitheoir: | |
|---|---|
| Rannpháirtithe: | |
| Formáid: | LEABHAR |
| Teanga: | English |
| Foilsithe / Cruthaithe: |
Homewood, Ill.
Learning Systems Co.
c1976.
|
| Sraith: | Irwin programmed learning aid series
|
| Ábhair: |