LEAB, Daniel J. BARTER AND SELF-HELP GROUPS 1932-33. American Studies, [S. l.], v. 7, n. 1, p. 15–24, 1966. DOI: 10.1353/amsj.v7i1.2211. Disponível em: https://journals.ku.edu/amsj/article/view/2211.. Acesso em: 24 nov. 2024.