Chad - The World Factbook

Northwest Cameroon. Source: World Factbook 2002 (CIA, 2002

Chad, History, Flag, Language, Population, Map, & Facts

The Government System of Chad

CIA - The World Factbook -- Cameroon

Chad - 2022 World Factbook Archive

The World Factbook (1982)/Sudan - Wikisource, the free online library

List of countries by rate of natural increase - Wikipedia

CIA - The World Factbook -- European Union

The World's Population: Where Will The Next 1,000 Babies Come From?

Chad

File:World Factbook (1982) Niger.jpg - Wikimedia Commons

File:CIA WorldFactBook-Political world.png - Wikimedia Commons

The World Factbook

The World Factbook (1982) - Wikisource, the free online library