(1)

• (a) This Act shall be signed in a single copy in the French and English languages and, subject to paragraph (2), shall be deposited with the Director General.
• (b) Official texts shall be established by the Director General, after consultation with the interested Governments, in the Arabic, German, Italian, Portuguese and Spanish languages, and such other languages as the Assembly may designate.
• (c) In case of differences of opinion on the interpretation of the various texts, the French text shall prevail.

(2) This Act shall remain open for signature until January 31, 1972. Until that date, the copy referred to in paragraph (1)(a) shall be deposited with the Government of the French Republic.

(3) The Director General shall certify and transmit two copies of the signed text of this Act to the Governments of all countries of the Union and, on request, to the Government of any other country.

(4) The Director General shall register this Act with the Secretariat of the United Nations.

(5) The Director General shall notify the Governments of all countries of the Union of signatures, deposits of instruments of ratification or accession and any declarations included in such instruments or made pursuant to Articles 28(1)(c), 30(2)(a) and (b), and 33(2), entry into force of any provisions of this Act, notifications of denunciation, and notifications pursuant to Articles 30(2)(c), 31(1) and (2), 33(3), and 38(1), as well as the Appendix.