Schedule
Original text. Later amendments are not shown.
| Argentina | Italy |
| Australia | Japan |
| Austria | Republic of Korea |
| Belgium | The Netherlands |
| Brazil | New Zealand |
| Bulgaria | North Korea |
| Canada | Norway |
| Chile | Papua New Guinea |
| Colombia | People’s Republic of China |
| Cuba | Peru |
| Czechoslovakia | Poland |
| Denmark | Romania |
| Ecuador | Republic of South Africa |
| Federal Republic of Germany | Spain |
| Finland | Sweden |
| The French Republic | Union of Soviet Socialist Republics |
| German Democratic Republic | United Kingdom of Great Britain and Northern Ireland |
| Greece | United States of America |
| Hungary | Uruguay |
| India |