Artikel 14

1. This Agreement shall be open for signature until 31 March 1971 and thereafter for accession, by States members of the Economic Commission for Europe and States admitted to the Commission in a consultative capacity under paragraph 8 or 11 of the Commission's terms of reference. Accessions under paragraph 11 of the Commission's terms of reference shall be limited to the following States: Algeria, Egypt, Jordan, Lebanon, Morocco and Tunisia.
2. This Agreement shall be ratified.
3. The instruments of ratification or accession shall be deposited with the Secretary-General of the United Nations.
4. This Agreement shall enter into force on the one hundred and eightieth day after the date of deposit of the eighth instrument of ratification or accession.
5. In respect of each State which ratifies, or accedes to, this Agreement after the deposit of the eighth instrument of ratification or accession as referred to in paragraph 4 of this article, the Agreement shall enter into force one hundred and eighty days after the deposit by that State of its instrument of ratification or accession.