Programmed learning aid for business communications
| Hovedforfatter: | |
|---|---|
| Andre forfattere: | |
| Format: | Bog |
| Sprog: | English |
| Udgivet: |
Homewood, Ill.
Learning Systems Co.
c1976.
|
| Serier: | Irwin programmed learning aid series
|
| Fag: |