VIITA, P. Maatalous Suomen kansantulolaskelmissa. Agricultural and Food Science, [S. l.], v. 26, n. 1, p. 121–129, 1954. DOI: 10.23986/afsci.71352. Disponível em: https://journal.fi/afs/article/view/71352. Acesso em: 17 jul. 2024.