Darwin and Malthus : few articles.
1. Who was Thomas Malthus : article from Encyclopaedia Britannica : https://www.britannica.com/biography/Thomas-Malthus
2. Who was Darwin : article from Encyclopaedia Britannica https://www.britannica.com/biography/Charles-Darwin
3. Darwin and Malthus : evolution library http://www.pbs.org/wgbh/evolution/library/02/5/l_025_01.html
4. Darwin and Malthus : university of Arizona. Darwin and Malthus selection. Author : Sandra Herbert, Source: Journal of the History of Biology, Vol. 4, No. 1 (Spring, 1971). See : www.blc.arizona.edu/courses/schaffer/449/Darwin/Herbert%20-%20Darwin%20Malthus%20Selection.pdf
6. Malthus, Classical politic economy and the causes of the Great Famine : https://people.hofstra.edu/alan_j_singer/CoursePacks/MalthusClassicalPoliticalEconomyandtheCausesoftheGreatFamine.pdf
7. Charles Darwin's theory of evolution
8. Malthus, population growth and the resource base