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| Country | Code |
|---|---|
| Afghanistan | AF |
| Albania | AL |
| Algeria | DZ |
| American Somoa | AS |
| Andorra | AD |
| Angola | AO |
| Antarctica | AQ |
| Antigua | AG |
| Argentina | AR |
| Australia | AU |
| Austria | AT |
| The Bahamas | BS |
| Bahrain | BH |
| Bangladesh | BD |
| Barbados | BB |
| Belgium | BE |
| Belize | BZ |
| Benin | BJ |
| Bermuda | BM |
| Bhutan | BT |
| Bolivia | BO |
| Botswana | BW |
| Bouvetoya | BV |
| Brazil | BR |
| British Indian Ocean Territory | IO |
| British Virgin Islands | VG |
| Brunei | BN |
| Bulgaria | BG |
| Burma | BU |
| Burundi | BI |
| Cambodia | KH |
| Cameroon | CM |
| Canada | CA |
| Canal Zone | PZ |
| Canton and Enderbury Islands | CT |
| Republic of Cape Verde | CV |
| Cayman Islands | KY |
| Central African Empire | CF |
| Chad | TD |
| Channel Islands | GB1 |
| Chile | CL |
| China (Taiwan) | TW |
| China | CN |
| Christmas Island | CX |
| Cocos (Keeling) Islands | CC |
| Colombia | CO |
| Comoros | KM |
| Congo | CG |
| Cook Islands | CK |
| Costa Rica | CR |
| Cuba | CU |
| Cyprus | CY |
| Czechoslovakia | CS |
| Denmark | DK |
| Dominica | DM |
| Dominican Republic | DO |
| Ecuador | EC |
| Egypt | EG |
| El Salvador | SV |
| England | GB2 |
| Equatorial Guinea | GQ |
| Ethiopia | ET |
| Faroe Islands | FO |
| Falkland Islands | FK |
| Fiji | FJ |
| Finland | FI |
| France | FR |
| French Guiana | GF |
| French Polynesia | PF |
| French Southern and Antarctic Lands | FQ |
| French Territory of the Afars and Issas | AI |
| Gabon | GA |
| The Gambia | GM |
| German Democratic Republic | DD |
| Federal Republic of Germany | DE |
| Ghana | GH |
| Gibraltar | GI |
| Gilbert Islands | GE |
| Great Britain | GB3 |
| Greece | GR |
| Greenland | GL |
| Grenada | GD |
| Guadaloupe | GP |
| Guam | GU |
| Guatemala | GT |
| Guinea | GN |
| Guinea-Bissau | GW |
| Guyana | GY |
| Haiti | HT |
| Heard Island and McDonald Islands | HM |
| Honduras | HN |
| Hong Kong | HK |
| Hungary | HU |
| Iceland | IS |
| India | IN |
| Indonesia | ID |
| Iran | IR |
| Iraq | IQ |
| Iraq-Saudi Arabia Neutral Zone | NT |
| Ireland | IE |
| Isle of Man | GB4 |
| Israel | IL |
| Italy | IT |
| Ivory Coast | CI |
| Jamaica | JM |
| Japan | JP |
| Jordan | JO |
| Kenya | KE |
| Democratic Peoples Republic of Korea | KP |
| Republic of Korea | KR |
| Kuwait | KW |
| Laos | LA |
| Lebanon | LN |
| Lesotho | LS |
| Liberia | LR |
| Libya | LY |
| Liechtenstein | LI |
| Macao | MO |
| Madagascar | MG |
| Malawi | MW |
| Malaysia | MY |
| Maldives | MV |
| Mali | ML |
| Malta | MT |
| Martinique | MQ |
| Mauritania | MR |
| Mauritius | MU |
| Mexico | MX |
| Midway Islands | MI |
| Monaco | MC |
| Mongolia | MN |
| Montserrat | MS |
| Morocco | MA |
| Mozambique | MZ |
| Muscat | OM1 |
| Namibia | NA |
| Nauru | NR |
| Nevassa Island | NV |
| Nepal | NP |
| Netherlands | NL |
| Netherlands Antilles | AN |
| New Caledonia | NC |
| New Hebrides | NH |
| New Zealand | NZ |
| Nicaragua | NI |
| Niger | NE |
| Nigeria | NG |
| Niue | NU |
| Norfolk Island | NF |
| Northern Ireland | GB5 |
| Norway | NO |
| Oman | OM |
| Pakistan | PK |
| Panama | PA |
| Papua New Guinea | PG |
| Paracel Islands | PI |
| Paraguay | PY |
| Peru | PE |
| Philippines | PH |
| Pitcairn | PN |
| Poland | PL |
| Portugal | PT |
| Puerto Rico | PR |
| Qatar | QA |
| Reunion | RE |
| Romania | RO |
| Rwanda | RW |
| St. Christopher-Nevis-Anguilla | KN |
| St. Helena | SH |
| St. Lucia | LC |
| St. Pierre and Miquelon | PM |
| St. Vincent | VC |
| San Marino | SM |
| Sao Tome and Principe | ST |
| Saudi Arabia | SA |
| Scotland | GB6 |
| Senegal | SN |
| Seychelles | SC |
| Sierra Leone | SL |
| Singapore | SG |
| Slovenia | SI |
| Solomon Islands | SB |
| Somalia | SO |
| South Africa | ZA |
| Southern Rhodesia | RH |
| Spain | ES |
| Sri Lanka | LK |
| Sudan | SD |
| Surinam | SR |
| Svalbard and Jan Mayen | SJ |
| Swaziland | SZ |
| Sweden | SE |
| Switzerland | CH |
| Syria | SY |
| United Republic of Tanzania | TZ |
| Thailand | TH |
| Tibet | CN1 |
| Togo | TG |
| Tokelau Islands | TK |
| Tonga | TO |
| Trinidad and Tobago | TT |
| Trust Territory of the Pacific Islands (includes Caroline, Mariana, and Marshall Island Groups) | PC |
| Tunisia | TN |
| Turkey | TR |
| Turks and Caicos Islands | TC |
| Tuvalu | TV |
| Uganda | UG |
| Union of Soviet Socialist Republics | SU |
| United Arab Emirates | AE |
| United Kingdom | GB |
| United States | US |
| United States Miscellaneous Pacific Islands (includes Kingman Reef, Howland, Baker and Jarvis Islands and Palmyra Atoll) | PU |
| Upper Volta | HV |
| Uruguay | UY |
| Vatican City | VA |
| Venezuela | VE |
| Vietnam | VN |
| Virgin Islands of the U.S. | VI |
| Wake Island | WK |
| Wales | GB7 |
| Wallis and Futana | WF |
| Western Sahara | EH |
| Western Somoa | WS |
| Yemen (Aden) | YD |
| Yemen (Sana) | YE |
| Yugoslavia | YU |
| Zaire | ZR |
| Zambia | ZM |
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