The information base for the planning of the diversified educational field
| 1. autor: | |
|---|---|
| Format: | Książka | 
| Język: | English | 
| Wydane: | Paris
          International Institute for Educational Planning
    
        1988. | 
| Seria: | IIEP research report
              no. 68 | 
| Hasła przedmiotowe: |