| 12 November 1965 |
1 January 1967 |
International Telecommunications Convention with Final Protocol, Additional Protocols I to III and Optional Additional Protocol (with Additional Protocol IV of 21 October 1965) |
| 19 December 1966 |
23 March 1976 |
International Covenant on Civil and Political Rights |
| 14 November 1969 |
1 July 1971 |
Universal Postal Convention (with Final Protocol and Detailed Regulations) |
| 14 November 1969 |
1 July 1971 |
Additional Protocol to the Constitution of the Universal Postal Union (with Declarations, General Regulations, Final Protocol and Rules of Procedure of Congresses) |
| 14 November 1969 |
1 July 1971 |
Postal Parcels Agreement (with Final Protocol and Detailed Regulations] |
| 14 November 1969 |
1 July 1971 |
Insured Letters and Boxes Agreement [With Detailed Regulations] |
| 14 November 1969 |
1 July 1971 |
Additional Protocol to the Constitution of the Universal Postal Union (with Declarations, General Regulations, Final Protocol and Rules of Procedure of Congresses) |