| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| ALGERIA | Acceptance | 18/08/1977 | 18/11/1977 |
| AUSTRALIA | Acceptance | 22/10/1981 | 22/01/1982 |
| AUSTRIA | Acceptance | 24/07/1977 | 18/11/1977 |
| BELGIUM | Acceptance | 04/05/1981 | 04/08/1981 |
| BELGIUM | Reservation | 04/05/1981 | |
| BOTSWANA | Acceptance | 05/07/1991 | 05/10/1991 |
| BOTSWANA | Reservation | 05/07/1991 | |
| BULGARIA | Acceptance | 14/06/1985 | 14/09/1985 |
| CAMEROON | Acceptance | 03/02/1978 | 03/05/1978 |
| CANADA | Acceptance | 10/06/1977 | 18/11/1977 |
| CANADA | Reservation | 10/06/1977 | |
| DENMARK | Acceptance | 19/12/1978 | 19/03/1979 |
| DENMARK | Reservation | 19/12/1978 | |
| EUROPEAN ECONOMIC COMMUNITY | Acceptance | 20/06/1978 | 20/09/1978 |
| EUROPEAN ECONOMIC COMMUNITY | Reservation | 20/06/1978 | |
| FINLAND | Acceptance | 08/06/1983 | 08/09/1983 |
| FRANCE | Acceptance | 26/02/1980 | 26/05/1980 |
| FRANCE | Reservation | 26/02/1980 | |
| GERMANY FEDERAL REPUBLIC | Acceptance | 21/08/1978 | 21/11/1978 |
| GERMANY FEDERAL REPUBLIC | Reservation | 21/08/1978 | |
| GREECE | Acceptance | 15/07/1988 | 15/10/1988 |
| HUNGARY | Acceptance | 18/12/1981 | 18/03/1982 |
| INDIA | Acceptance | 30/05/1985 | 30/08/1985 |
| INDIA | Reservation | 30/05/1985 | |
| IRELAND | Acceptance | 22/04/1981 | 22/07/1981 |
| IRELAND | Reservation | 22/04/1981 | |
| ISRAEL | Acceptance | 11/04/1980 | 11/07/1980 |
| ISRAEL | Reservation | 11/04/1980 | |
| ITALY | Acceptance | 07/07/1980 | 07/10/1980 |
| ITALY | Reservation | 07/07/1980 | |
| JAPAN | Acceptance | 10/06/1980 | 10/09/1980 |
| JAPAN | Reservation | 10/06/1980 | |
| KENYA | Acceptance | 31/08/1983 | 01/12/1983 |
| KENYA | Reservation | 31/08/1983 | |
| KOREA REPUBLIC OF | Acceptance | 05/12/1986 | 05/03/1987 |
| KOREA REPUBLIC OF | Reservation | 05/12/1986 | |
| LESOTHO | Acceptance | 14/05/1982 | 14/08/1982 |
| LESOTHO | Reservation | 14/05/1982 | |
| LUXEMBOURG | Acceptance | 09/07/1981 | 09/10/1981 |
| LUXEMBOURG | Reservation | 09/07/1981 | |
| MALAWI | Acceptance | 29/03/1993 | |
| MALAWI | Reservation | 29/03/1993 | |
| MALAYSIA | Acceptance | 08/06/1983 | 08/09/1983 |
| MOROCCO | Acceptance | 02/06/1987 | 02/09/1987 |
| MOROCCO | Reservation | 02/06/1987 | |
| NETHERLANDS THE | Acceptance | 01/10/1979 | 01/01/1980 |
| NETHERLANDS THE | Reservation | 01/10/1979 | |
| NEW ZEALAND | Acceptance | 14/07/1977 | 18/11/1977 |
| PAKISTAN | Acceptance | 09/01/1981 | 09/04/1981 |
| POLAND | Acceptance | 26/08/1982 | 26/11/1982 |
| RWANDA | Acceptance | 22/04/1981 | 22/07/1981 |
| SOUTH AFRICA | Acceptance | 19/05/1981 | 12/08/1981 |
| SOUTH AFRICA | Reservation | 19/05/1981 | |
| SPAIN | Acceptance | 21/06/1991 | 21/09/1991 |
| SWITZERLAND | Acceptance | 13/04/1977 | |
| UGANDA | Acceptance | 11/07/1989 | 11/10/1989 |
| UNITED KINGDOM | Acceptance | 30/04/1981 | 30/07/1981 |
| UNITED KINGDOM | Reservation | 30/04/1981 | |
| UNITED STATES OF AMERICA | Acceptance | 28/10/1983 | 28/01/1984 |
| UNITED STATES OF AMERICA | Reservation | 28/10/1983 | |
| ZAMBIA | Acceptance | 21/05/1984 | 21/08/1984 |
| ZIMBABWE | Acceptance | 20/06/1988 | 20/09/1988 |
| ZIMBABWE | Reservation | 20/06/1988 |