| Country | Action | Action Date | Effective Date |
|---|
| AUSTRALIA | Signature | 28/04/1976 | |
| AUSTRALIA | Notification | 23/06/1976 | |
| AUSTRALIA | Ratification | 08/11/1976 | |
| AUSTRIA | Signature | 20/04/1976 | |
| AUSTRIA | Ratification | 29/08/1977 | |
| BELGIUM | Signature | 26/04/1976 | |
| BELGIUM | Notification | 30/06/1976 | |
| BELGIUM | Ratification | 20/09/1978 | |
| Berlin West | Extension | 29/06/1976 | |
| BOLIVIA | Signature | 30/04/1976 | |
| BOLIVIA | Notification | 30/06/1976 | |
| BOLIVIA | Ratification | 14/06/1977 | |
| BULGARIA | Notification | 29/06/1976 | |
| BULGARIA | Accession | 25/05/1977 | |
| BULGARIA | Declaration | 25/05/1977 | |
| CANADA | Signature | 29/04/1976 | |
| CANADA | Ratification | 30/06/1976 | |
| CZECHOSLOVAKIA | Signature | 27/04/1976 | |
| CZECHOSLOVAKIA | Declaration | 27/04/1976 | |
| CZECHOSLOVAKIA | Approval | 29/06/1976 | |
| DENMARK | Signature | 11/03/1976 | |
| DENMARK | Notification | 30/06/1976 | |
| DENMARK | Ratification | 12/08/1976 | |
| EUROPEAN ECONOMIC COMMUNITY | Signature | 29/04/1976 | |
| EUROPEAN ECONOMIC COMMUNITY | Notification | 30/06/1976 | |
| EUROPEAN ECONOMIC COMMUNITY | Approval | 22/12/1978 | |
| FRANCE | Signature | 23/02/1976 | |
| FRANCE | Notification | 23/06/1976 | |
| FRANCE | Approval | 15/07/1976 | |
| GERMANY FEDERAL REPUBLIC | Signature | 12/03/1976 | |
| GERMANY FEDERAL REPUBLIC | Notification | 29/06/1976 | |
| GERMANY FEDERAL REPUBLIC | Acceptance | 29/09/1976 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 29/09/1976 | |
| HUNGARY | Signature | 30/04/1976 | |
| HUNGARY | Declaration | 30/04/1976 | |
| HUNGARY | Ratification | 08/06/1976 | |
| HUNGARY | Declaration | 08/06/1976 | |
| INDIA | Signature | 30/04/1976 | |
| INDIA | Ratification | 09/07/1976 | |
| INDONESIA | Signature | 29/04/1976 | |
| INDONESIA | Notification | 29/06/1976 | |
| INDONESIA | Ratification | 03/08/1976 | |
| IRELAND, REPUBLIC OF | Signature | 28/04/1976 | |
| IRELAND, REPUBLIC OF | Ratification | 12/09/1977 | |
| ITALY | Signature | 30/04/1976 | |
| ITALY | Ratification | 30/09/1977 | |
| JAPAN | Signature | 16/03/1976 | |
| JAPAN | Acceptance | 17/06/1976 | |
| LUXEMBOURG | Signature | 26/04/1976 | |
| LUXEMBOURG | Notification | 30/06/1976 | |
| LUXEMBOURG | Ratification | 20/09/1977 | |
| MALAYSIA | Signature | 18/03/1976 | |
| MALAYSIA | Ratification | 18/03/1976 | |
| NETHERLANDS THE | Signature | 26/04/1976 | |
| NETHERLANDS THE | Notification | 28/06/1976 | |
| NETHERLANDS THE | Ratification | 02/02/1978 | |
| NIGERIA | Signature | 22/04/1976 | |
| NIGERIA | Notification | 28/06/1976 | |
| NIGERIA | Ratification | 06/07/1976 | |
| NORWAY | Accession | 28/12/1978 | |
| POLAND | Signature | 29/04/1976 | |
| POLAND | Notification | 24/06/1976 | |
| POLAND | Acceptance | 14/06/1977 | |
| ROMANIA | Withdrawal | | 31/12/1981 |
| ROMANIA | Signature | 29/04/1976 | |
| ROMANIA | Declaration | 29/04/1976 | |
| ROMANIA | Ratification | 03/09/1976 | |
| ROMANIA | Declaration | 03/09/1976 | |
| SOVIET UNION | Signature | 23/04/1976 | |
| SOVIET UNION | Declaration | 23/04/1976 | |
| SOVIET UNION | Acceptance | 11/06/1976 | |
| SOVIET UNION | Declaration | 11/06/1976 | |
| SPAIN | Signature | 29/04/1976 | |
| SPAIN | Ratification | 09/12/1976 | |
| THAILAND | Signature | 10/02/1976 | |
| THAILAND | Ratification | 24/05/1976 | |
| TURKEY | Notification | 09/06/1976 | |
| TURKEY | Accession | 29/12/1978 | |
| TURKEY | Withdrawal | 01/06/1982 | 01/06/1983 |
| UNITED KINGDOM | Signature | 07/11/1975 | |
| UNITED KINGDOM | Signature | 17/11/1975 | |
| UNITED KINGDOM | Declaration | 17/11/1975 | |
| UNITED KINGDOM | Ratification | 28/06/1976 | |
| UNITED STATES OF AMERICA | Signature | 11/03/1976 | |
| UNITED STATES OF AMERICA | Notification | 29/06/1976 | |
| UNITED STATES OF AMERICA | Ratification | 28/10/1976 | |
| YUGOSLAVIA | Signature | 27/04/1976 | |
| YUGOSLAVIA | Notification | 22/06/1976 | |
| YUGOSLAVIA | Ratification | 29/12/1976 | |
| ZAIRE | Signature | 30/04/1976 | |
| ZAIRE | Notification | 17/05/1977 | |
| ZAIRE | Ratification | 25/07/1977 | |