Programmed learning aid for United States history
| Egile nagusia: | |
|---|---|
| Beste egile batzuk: | |
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
Homewood, Illinois
Learning Systems
1973-1975.
|
| Saila: | Irwin Programmed learning aid series
|
| Gaiak: |