Convention against Discrimination in Education 3. The denunciation shall take effect twelve months after the receipt of the instrument of denunciation. Article 17 The Director-General of the United Nations Educational, Scientific and Cultural Organization shall inform the States Members of the Organization, the States not members of the Organization which are referred to in Article 13, as well as the United Nations, of the deposit of all the instruments of ratification, acceptance and accession provided for in Articles 12 and 13, and of the notifications and denunciations provided for in Articles 15 and 16 respectively. Article 18 1. This Convention may be revised by the General Conference of the United Nations Educational, Scientific and Cultural Organization. Any such revision shall, however, bind only the States which shall become Parties to the revising convention. 2. If the General Conference should adopt a new convention revising this Convention in whole or in part, then, unless the new convention otherwise provides, this Convention shall cease to be open to ratification, acceptance or accession as from the date on which the new revising convention enters into force. Article 19 In conformity with Article 102 of the Charter of the United Nations, this Convention shall be registered with the Secretariat of the United Nations at the request of the Director-General of the United Nations Educational, Scientific and Cultural Organization. Done in Paris, this fifteenth day of December 1960, in two authentic copies bearing the signatures of the President of the eleventh session of the General Conference and of the Director-General of the United Nations Educational, Scientific and Cultural Organization, which shall be deposited in the archives of the United Nations Educational, Scientific and Cultural Organization, and certified true copies of which shall be delivered to all the States referred to in Articles 12 and 13 as well as to the United Nations. The foregoing is the authentic text of the Convention duly adopted by the General Conference of the United Nations Educational, Scientific and Cul- 9 I.A.1