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	The Constitution of the Universal Postal Union is the fundamental Act containing the organic rules of the Union. It is a diplomatic Act, ratified by the competent authorities of each member country. Amendments to it can be made only at Congress and are recorded in an Additional Protocol, which is also subject to ratification.   The common rules applicable to the international postal service and the provisions concerning the letter-post and parcel-post services are given in the Convention and its Regulations. The Regulations of the Convention are agreements concluded by the national postal administrations elected by the Congress to the Postal Operations Council (POC). The POC has the authority to amend the Regulations at its annual sessions. The Convention and its Regulations are binding on all member countries.   The Postal Payment Services Agreement and its Regulations are binding only on the countries that are parties to the Agreement.   The current Constitution dates from the 1964 Vienna Congress; there have been 7 Additional Protocols. The provisions relating to the application of the Constitution and the operation of the Union are contained in the General Regulations that are revised at each Congress.     UPU Acts in four Volumes Constitution and General Regulations Letter Post Manual Manual of the Postal Payment Services Parcel Post Manual   23rd Congress Acts Decisions of the 2004 Bucharest Congress  2.8MB   24th Congress Acts Decisions of the 24th Congress - 2008  2.1MB Letter Post Regulations - Final Protocol Parcel Post Regulations - Final Protocol Regulations of the Postal Payment Services Agreement - Final Protocol   UPU Acts in force indefinitely Constitution – Vienna 1964  306kB Additional Protocol – Tokyo 1969  116kB 2nd Additional Protocol – Lausanne 1974  67kB 3rd Additional Protocol – Hamburg 1984  67kB 4th Additional Protocol – Washington 1989  211kB 5th Additional Protocol – Seoul 1994  56kB 6th Additional Protocol – Beijing 1999  55kB 7th Additional Protocol – Bucharest 2004  66kB UPU General Regulations – Bucharest 2004  180kB   UPU Member countries' legal situation English version  199kB - 11 February 2010 Arabic version  1.2MB Portuguese version  199kB - 11 February 2010 Russian version  1.3MB Spanish version  203kB - 11 February 2010   Entities responsible for fulfilling the obligations English version  110kB Arabic version  205kB Spanish version  154kB Portuguese version  165kB Russian version  218kB Update form  72kB Arabic version  61kB

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