| Country | Action | Action Date | Effective Date |
|---|
| AUSTRALIA | Acceptance | 22/10/1981 | 22/01/1982 |
| AUSTRIA | Acceptance | 16/02/1981 | 16/05/1981 |
| AUSTRIA | Reservation | 16/02/1981 | |
| CAMEROON | Acceptance | 10/05/1978 | |
| CANADA | Acceptance | 13/11/1980 | |
| CANADA | Reservation | 13/11/1980 | |
| FINLAND | Acceptance | 18/10/1979 | |
| FINLAND | Reservation | 18/10/1979 | |
| ISRAEL | Acceptance | 29/10/1980 | |
| ISRAEL | Reservation | 29/10/1980 | |
| KENYA | Acceptance | 31/08/1983 | 01/12/1983 |
| KENYA | Reservation | 31/08/1983 | |
| LESOTHO | Acceptance | 10/09/1987 | 10/12/1987 |
| LESOTHO | Reservation | 10/09/1987 | |
| MOROCCO | Acceptance | 02/06/1987 | 02/09/1987 |
| NEW ZEALAND | Acceptance | 20/03/1984 | 20/06/1984 |
| NEW ZEALAND | Reservation | 20/03/1984 | |
| PAKISTAN | Acceptance | 08/06/1982 | 08/09/1982 |
| RWANDA | Acceptance | 22/04/1981 | 22/07/1981 |
| RWANDA | Reservation | 22/04/1981 | |
| SWEDEN | Acceptance | 22/06/1978 | |
| SWEDEN | Reservation | 22/06/1978 | |
| SWITZERLAND | Acceptance | 25/07/1985 | 25/10/1985 |
| SWITZERLAND | Reservation | 25/07/1985 | |
| UNITED KINGDOM | | | |
| UNITED STATES OF AMERICA | Acceptance | 28/10/1983 | 28/01/1984 |
| UNITED STATES OF AMERICA | Reservation | 28/10/1983 | |
| ZIMBABWE | Acceptance | 20/06/1988 | 20/09/1988 |
| ZIMBABWE | Reservation | 20/06/1988 | |