Records of the general conference : twentieth session, Paris, 20 October to 20 November 1987.
- Paris : Unesco, © 1988.
- Vols. ; 29 cm.
V. 1-Resolutions ;
330 330
92-3-102551-1
Conference Paper.
060 / U2r
V. 1-Resolutions ;
330 330
92-3-102551-1
Conference Paper.
060 / U2r