| 9 July 1931 |
13 May 1932 |
Convention between His Majesty, in respect of the United Kingdom, and the President of the Portuguese Republic regarding Legal Proceedings in Civil and Commercial Matters |
| 11 October 1947 |
23 March 1950 |
Convention of the World Meteorological Organization |
| 10 June 1948 |
19 February 1952 |
International Convention for the Safety of Life at Sea, 1948 |
|
1 October 1952 |
International Sanitary Regulations adopted by the World Health Assembly on May 25, 1951 |
|
18 March 2007 |
Convention on the Protection and Promotion of the Diversity of Cultural Expressions |