Statistical yearbook, 1973 ; Annuaire statistique, 1973
Statistical yearbook, 1973 ; Annuaire statistique, 1973
- Paris : UNESCO, 1974.
- 738 p.
9230012149
OC 31 (100) =20=40 "1973" STA.
9230012149
OC 31 (100) =20=40 "1973" STA.