| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| AFGHANISTAN | Acceptance | 23/09/1957 | |
| ANTIGUA AND BARBUDA | Signature | 15/04/1987 | |
| ARGENTINA | Acceptance | 13/10/1959 | |
| AUSTRALIA | Acceptance | 23/12/1955 | |
| AUSTRIA | Signature | 02/12/1955 | |
| AUSTRIA | Acceptance | 28/09/1956 | |
| BANGLADESH | Acceptance | 18/06/1976 | |
| BARBADOS | Acceptance | 25/06/1980 | |
| BELGIUM | Acceptance | 27/12/1956 | |
| BELIZE | Acceptance | 19/03/1982 | |
| BENIN | Signature | 05/02/1987 | |
| BOLIVIA | Acceptance | 02/04/1956 | |
| BOTSWANA | Acceptance | 23/03/1979 | |
| BRAZIL | Signature | 27/01/1956 | |
| BRAZIL | Acceptance | 31/12/1956 | |
| BURMA | Acceptance | 03/12/1956 | |
| BURUNDI | Acceptance | 28/11/1979 | |
| CAMEROON | Acceptance | 01/10/1974 | |
| CANADA | Signature | 25/10/1955 | |
| CANADA | Acceptance | 25/10/1955 | |
| CEYLON | Acceptance | 27/02/1956 | |
| CHILE | Signature | 25/05/1955 | |
| CHILE | Acceptance | 15/04/1957 | |
| CHINA | Acceptance | 15/01/1969 | |
| COLOMBIA | Signature | 25/05/1955 | |
| COLOMBIA | Acceptance | 16/07/1956 | |
| CONGO | Acceptance | 15/04/1970 | |
| CONGO, PEOPLES REPUBLIC OF | Acceptance | 01/10/1980 | |
| COSTA RICA | Signature | 25/05/1955 | |
| COSTA RICA | Acceptance | 05/01/1956 | |
| CUBA | Signature | 25/05/1955 | |
| CUBA | Acceptance | 06/09/1957 | |
| CUBA | Withdrawal | 14/11/1960 | |
| CYPRUS | Acceptance | 02/03/1962 | |
| DENMARK | Acceptance | 18/06/1956 | |
| DJIBOUTI | Acceptance | 01/10/1980 | |
| DOMINICA, COMMONWEALTH OF | Acceptance | 29/09/1980 | |
| DOMINICAN REPUBLIC | Signature | 25/05/1955 | |
| DOMINICAN REPUBLIC | Acceptance | 21/02/1956 | |
| DOMINICAN REPUBLIC | Withdrawal | 01/12/1960 | |
| DOMINICAN REPUBLIC | Re-Application | 31/10/1961 | |
| ECUADOR | Signature | 01/06/1955 | |
| ECUADOR | Acceptance | 05/12/1955 | |
| EGYPT | Acceptance | 16/12/1955 | |
| EL SALVADOR | Acceptance | 04/05/1956 | |
| ETHIOPIA | Acceptance | 26/01/1956 | |
| FIJI | Acceptance | 12/07/1979 | |
| FINLAND | Acceptance | 22/06/1956 | |
| FRANCE | Acceptance | 20/07/1956 | |
| GABON | Acceptance | 20/10/1970 | |
| GAMBIA THE | Acceptance | 19/09/1983 | |
| GERMANY FEDERAL REPUBLIC | Acceptance | 20/07/1956 | |
| GHANA | Acceptance | 03/04/1958 | |
| GREECE | Signature | 25/05/1955 | |
| GREECE | Acceptance | 26/09/1957 | |
| GRENADA | Acceptance | 27/08/1975 | |
| GUATEMALA | Signature | 25/05/1955 | |
| GUATEMALA | Acceptance | 14/03/1956 | |
| GUINEA | Signature | 22/10/1982 | |
| GUINEA | Acceptance | 22/10/1982 | |
| GUINEA BISSAU | Acceptance | 25/03/1977 | |
| GUYANA | Acceptance | 04/01/1967 | |
| HAITI | Signature | 25/05/1955 | |
| HAITI | Acceptance | 09/03/1956 | |
| HONDURAS | Signature | 25/05/1955 | |
| HONDURAS | Acceptance | 16/04/1956 | |
| HUNGARY | Signature | 29/04/1985 | |
| ICELAND | Signature | 18/08/1955 | |
| ICELAND | Acceptance | 18/08/1955 | |
| INDIA | Signature | 19/10/1955 | |
| INDIA | Acceptance | 18/04/1956 | |
| INDONESIA | Acceptance | 28/12/1956 | |
| INDONESIA | Withdrawal | 06/11/1961 | |
| INDONESIA | Re-Application | 23/04/1968 | |
| IRAN | Acceptance | 28/12/1956 | |
| IRAQ | Signature | 09/11/1956 | |
| IRAQ | Acceptance | 27/12/1956 | |
| IRELAND, REPUBLIC OF | Acceptance | 11/09/1958 | |
| ISRAEL | Acceptance | 26/09/1956 | |
| ITALY | Acceptance | 27/12/1956 | |
| IVORY COAST | Acceptance | 11/03/1963 | |
| JAMAICA | Acceptance | 31/03/1964 | |
| JAPAN | Acceptance | 15/06/1956 | |
| JORDAN | Acceptance | 28/05/1956 | |
| KENYA | Acceptance | 03/02/1964 | |
| KOREA REPUBLIC OF | Acceptance | 16/03/1964 | |
| KUWAIT | Acceptance | 13/09/1962 | |
| LEBANON | Acceptance | 28/12/1956 | |
| LESOTHO | Acceptance | 29/09/1972 | |
| LIBERIA | Acceptance | 28/03/1962 | |
| LIBYA | Acceptance | 18/09/1958 | |
| LUXEMBOURG | Signature | 26/09/1956 | |
| LUXEMBOURG | Acceptance | 04/10/1956 | |
| MALAGASY REPUBLIC | Acceptance | 27/09/1963 | |
| MALAWI | Acceptance | 19/07/1965 | |
| MALAYA | Acceptance | 20/03/1958 | |
| MALDIVES | Acceptance | 02/02/1983 | |
| MALI | Acceptance | 09/05/1978 | |
| MAURITANIA | Acceptance | 29/12/1967 | |
| MAURITIUS | Acceptance | 23/09/1968 | |
| MEXICO | Signature | 25/05/1955 | |
| MEXICO | Acceptance | 30/12/1955 | |
| MICRONESIA | Signature | 24/06/1993 | |
| MOROCCO | Acceptance | 30/08/1962 | |
| MOZAMBIQUE | Signature | 24/09/1984 | |
| NEPAL | Acceptance | 07/01/1966 | |
| NETHERLANDS THE | Signature | 08/12/1955 | |
| NETHERLANDS THE | Acceptance | 28/12/1956 | |
| NEW ZEALAND | Acceptance | 31/08/1961 | |
| NICARAGUA | Signature | 25/05/1955 | |
| NICARAGUA | Acceptance | 14/03/1956 | |
| NIGER | Signature | 10/12/1979 | |
| NIGER | Acceptance | 07/01/1980 | |
| NIGERIA | Acceptance | 30/03/1961 | |
| NORWAY | Signature | 01/06/1956 | |
| NORWAY | Acceptance | 11/06/1956 | |
| OMAN | Acceptance | 20/02/1973 | |
| PAKISTAN | Signature | 21/07/1955 | |
| PAKISTAN | Acceptance | 18/05/1956 | |
| PANAMA | Signature | 25/05/1955 | |
| PANAMA | Acceptance | 27/02/1956 | |
| PAPUA NEW GUINEA | Acceptance | 09/10/1975 | |
| PARAGUAY | Signature | 25/05/1955 | |
| PARAGUAY | Acceptance | 27/07/1956 | |
| PERU | Signature | 25/05/1955 | |
| PERU | Acceptance | 06/02/1956 | |
| PHILIPPINES | Acceptance | 12/08/1957 | |
| PORTUGAL | Acceptance | 08/07/1966 | |
| RWANDA | Acceptance | 06/11/1975 | |
| SAINT LUCIA | Acceptance | 28/04/1982 | |
| SAUDI ARABIA | Signature | 13/09/1962 | |
| SAUDI ARABIA | Acceptance | 18/09/1962 | |
| SENEGAL | Acceptance | 31/08/1962 | |
| SEYCHELLES | Acceptance | 11/06/1981 | |
| SIERRA LEONE | Acceptance | 10/09/1962 | |
| SINGAPORE | Acceptance | 04/09/1968 | |
| SOLOMON ISLANDS | Acceptance | 21/07/1980 | |
| SOMALIA | Acceptance | 31/08/1962 | |
| SOUTH AFRICA | Signature | 26/03/1957 | |
| SOUTH AFRICA | Acceptance | 03/04/1957 | |
| SPAIN | Acceptance | 24/03/1960 | |
| SUDAN | Acceptance | 21/10/1960 | |
| SWAZILAND | Acceptance | 22/09/1969 | |
| SWEDEN | Acceptance | 06/06/1956 | |
| SYRIA | Signature | 30/12/1955 | |
| SYRIA | Acceptance | 28/06/1962 | |
| TANGANYIKA | Acceptance | 10/09/1962 | |
| THAILAND | Acceptance | 03/12/1956 | |
| TOGO | Acceptance | 04/09/1962 | |
| TRINIDAD AND TOBAGO | Acceptance | 10/06/1971 | |
| TUNISIA | Acceptance | 25/07/1962 | |
| TURKEY | Acceptance | 19/12/1956 | |
| UGANDA | Acceptance | 27/09/1963 | |
| UNITED ARAB EMIRATES | Acceptance | 30/09/1977 | |
| UNITED ARAB REPUBLIC | Acceptance | 23/10/1958 | |
| UNITED KINGDOM | Signature | 25/10/1955 | |
| UNITED KINGDOM | Ratification | 03/01/1956 | |
| UNITED KINGDOM | Acceptance | 03/01/1956 | |
| UNITED STATES OF AMERICA | Signature | 05/12/1955 | |
| UNITED STATES OF AMERICA | Acceptance | 05/12/1955 | |
| UPPER VOLTA | Acceptance | 20/08/1975 | |
| URUGUAY | Signature | 28/09/1956 | |
| URUGUAY | Acceptance | 22/08/1968 | |
| VANUATU | Acceptance | 28/09/1981 | |
| VENEZUELA | Acceptance | 28/12/1956 | |
| VIETNAM | Acceptance | 04/08/1967 | |
| WESTERN SAMOA | Acceptance | 28/06/1974 | |
| YEMEN ARAB REPUBLIC | Acceptance | 22/05/1970 | |
| YUGOSLAVIA | Acceptance | 05/07/1968 | |
| ZAIRE | Acceptance | 15/04/1970 | |
| ZAMBIA | Acceptance | 23/09/1965 | |
| ZIMBABWE | Acceptance | 29/09/1980 |