EEC Council: Regulation No 1 determining the languages to be used by the European Economic Community
Modified by
Council Decision of the European Communities of 1 January 1973 adjusting the documents concerning the accession of the new Member States to the European Communities
| January 1, 1973 | article 1 | Amendment |
| January 1, 1973 | article 4 | Amendment |
| January 1, 1973 | article 5 | Amendment |