Rapports :
Rapports : Comissions du programme, commission administrative, comité juridique (volume 2)
- París : UNESCO, 1981.
- 320 p.
9232019604
DO 341.16: 001 (047.3) =40 1980 INF No. 21
9232019604
DO 341.16: 001 (047.3) =40 1980 INF No. 21