| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BELGIUM | Signature | 01/06/1967 | |
| BELGIUM | Ratification | 28/06/1976 | |
| CANADA | Signature | 28/11/1967 | |
| DENMARK | Signature | 24/11/1967 | |
| DENMARK | Ratification | 28/06/1976 | |
| FRANCE | Signature | 26/07/1967 | |
| FRANCE | Approval | 12/06/1973 | |
| FRANCE | Declaration | 12/06/1973 | |
| GERMAN DEMOCRATIC REPUBLIC | Accession | 09/03/1978 | 07/06/1978 |
| GERMAN DEMOCRATIC REPUBLIC | Statement | 09/03/1978 | |
| GERMANY FEDERAL REPUBLIC | Signature | 15/11/1967 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 28/06/1976 | |
| GERMANY FEDERAL REPUBLIC | Reservation | 28/06/1976 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 28/06/1976 | |
| Guernsey, Bailiwick of | Extension | 07/08/1975 | |
| ICELAND | Signature | 01/08/1967 | |
| ICELAND | Ratification | 12/05/1969 | |
| IRELAND, REPUBLIC OF | Signature | 29/11/1967 | |
| Isle of Man | Extension | 07/08/1975 | |
| ITALY | Signature | 09/11/1967 | |
| ITALY | Ratification | 24/09/1979 | |
| Jersey, Bailiwick of | Extension | 07/08/1975 | |
| NETHERLANDS THE | Signature | 30/11/1967 | |
| NETHERLANDS THE | Ratification | 28/06/1976 | |
| NORWAY | Signature | 22/11/1967 | |
| NORWAY | Ratification | 20/08/1968 | |
| POLAND | Signature | 29/11/1967 | |
| POLAND | Reservation | 29/11/1967 | |
| PORTUGAL | Signature | 03/10/1967 | |
| PORTUGAL | Ratification | 28/10/1968 | |
| SOVIET UNION | Signature | 09/10/1967 | |
| SOVIET UNION | Approval | 20/10/1972 | |
| SOVIET UNION | Reservation | 20/10/1972 | |
| SOVIET UNION | Notification | 12/07/1977 | |
| SPAIN | Signature | 29/11/1967 | |
| SPAIN | Ratification | 16/04/1975 | |
| SPAIN | Reservation | 16/04/1975 | |
| SWEDEN | Signature | 27/11/1967 | |
| SWEDEN | Ratification | 06/02/1970 | |
| UNITED KINGDOM | Signature | 09/10/1967 | |
| UNITED KINGDOM | Ratification | 02/06/1970 | |
| UNITED KINGDOM | Statement | 18/05/1978 | |
| UNITED STATES OF AMERICA | Signature | 25/11/1967 |