Membership instructions
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- Renewal or join of members, credit card (google play, apple pay etc.) please click here https://www.theisn.org/membership/j
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- Renewal or join of members, Cash, please click here: https://form.jotform.com/230643310202336
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- Renewal or join of Joint group members only, Cash, please click here https://form.jotform.com/230654852235355
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- Renewal or join of Collective-Society members, please click here: https://form.jotform.com/ISNMembership/collective-membership
World Bank Income Classification
| Afghanistan | Guinea-Bissau | Sierra Leone |
| Burkina Faso | Korea, Dem. People's Rep | Somalia |
| Burundi | Liberia | South Sudan |
| Central African Republic | Madagascar | Sudan |
| Chad | Malawi | Syrian Arab Republic |
| Congo, Dem. Rep | Mali | Togo |
| Eritrea | Mozambique | Uganda |
| Ethiopia | Niger | Yemen, Rep |
| Gambia, The | Rwanda |
| Angola | India | Samoa |
| Bangladesh | Jordan | São Tomé and Principe |
| Benin | Kenya | Senegal |
| Bhutan | Kiribati | Solomon Islands |
| Bolivia | Kyrgyz Republic | Sri Lanka |
| Cabo Verde | Lao PDR | Tanzania |
| Cambodia | Lebanon | Tajikistan |
| Cameroon | Lesotho | Timor-Leste |
| Comoros | Mauritania | Tunisia |
| Congo, Rep. | Micronesia, Fed. Sts. | Ukraine |
| Côte d'Ivoire | Morocco | Uzbekistan |
| Djibouti | Myanmar | Vanuatu |
| Egypt, Arab Rep. | Nepal | Venezuela |
| Eswatini | Nicaragua | Vietnam |
| Ghana | Nigeria | West Bank and Gaza |
| Guinea | Pakistan | Zambia |
| Haiti | Papua New Guinea | Zimbabwe |
| Honduras | Philippines |
| Albania | Equatorial Guinea | Moldova |
| Algeria | Fiji | Mongolia |
| Argentina | Gabon | Montenegro |
| Armenia | Georgia | Namibia |
| Azerbaijan | Grenada | North Macedonia |
| Belarus | Guatemala | Paraguay |
| Belize | Indonesia | Peru |
| Bosnia and Herzegovina | Iran, Islamic Rep. | Serbia |
| Botswana | Iraq | South Africa |
| Brazil | Jamaica | St. Lucia |
| China | Kazakhstan | St. Vincent and the Grenadines |
| Colombia | Kosovo | Suriname |
| Costa Rica | Libya | Thailand |
| Cuba | Malaysia | Tonga |
| Dominica | Maldives | Turkey |
| Dominican Republic | Marshall Islands | Turkmenistan |
| Ecuador | Mauritius | Tuvalu |
| El Salvador | Mexico | |
| American Samoa | Gibraltar | Palau |
| Andorra | Greece | Panama |
| Antigua and Barbuda | Greenland | Poland |
| Aruba | Guam | Portugal |
| Australia | Guyana | Puerto Rico |
| Austria | Hong Kong SAR, China | Qatar |
| Bahamas, The | Hungary | Romania |
| Bahrain | Iceland | Russian Federation |
| Barbados | Ireland | San Marino |
| Belgium | Isle of Man | Saudi Arabia |
| Bermuda | Israel | Seychelles |
| British Virgin Islands | Italy | Singapore |
| Brunei Darussalam | Japan | Sint Maarten (Dutch part) |
| Bulgaria | Korea, Rep. | Slovak Republic |
| Canada | Kuwait | Slovenia |
| Cayman Islands | Latvia | Spain |
| Channel Islands | Liechtenstein | St. Kitts and Nevis |
| Chile | Lithuania | St. Martin (French part) |
| Croatia | Luxembourg | Sweden |
| Curaçao | Macao SAR, China | Switzerland |
| Cyprus | Malta | Taiwan |
| Czech Republic | Monaco | Trinidad and Tobago |
| Denmark | Nauru | Turks and Caicos Islands |
| Estonia | Netherlands | United Arab Emirates |
| Faroe Islands | New Caledonia | United Kingdom |
| Finland | New Zealand | United States |
| France | Northern Mariana Islands | Uruguay |
| French Polynesia | Norway | Virgin Islands (U.S.) |
| Germany | Oman |