| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| AUSTRIA | Acceptance | 19/07/1978 | |
| DENMARK | Acceptance | 26/09/1977 | |
| DENMARK | Denunciation | 30/06/1979 | 30/06/1980 |
| FINLAND | Acceptance | 30/10/1978 | |
| HAITI | Acceptance | 13/12/1977 | |
| IRELAND, REPUBLIC OF | Acceptance | 06/01/1979 | |
| KOREA DEMOCRATIC PEOPLE'S REPUBLIC OF | Acceptance | 18/11/1977 | |
| NORWAY | Acceptance | 30/01/1978 | |
| PORTUGAL | Acceptance | 08/01/1980 | |
| SWEDEN | Acceptance | 25/04/1978 | |
| TURKEY | Acceptance | 25/01/1980 | |
| UNITED KINGDOM | Acceptance | 07/08/1978 | |
| UNITED KINGDOM | Denunciation | 30/06/1979 | 30/06/1980 |
| YUGOSLAVIA | Acceptance | 13/03/1978 |