P.-ST, A. Arbejdsløsheds-Statistik. Eighteenth Annual Report of the Bureau of Statistics of Labor. December 1887. Boston. (294 S.). Nationaløkonomisk Tidsskrift, [S. l.], v. 6, 1888. Disponível em: https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/65359. Acesso em: 14 jul. 2024.