| Extent: | 218 S. : graph. Darst. |
|---|---|
| Series: | Documentation, libraries and archives / Studies and research. - Paris : Unesco. - Vol. 7 |
| Type of publication: | Book / Working Paper |
| Language: | English |
| ISBN: | 92-3-101240-1 ; 3-7940-5151-3 |
| Source: |
Persistent link: https://www.econbiz.de/10004029213