HELMER PEDERSEN, Erik. Keijo Virtanen: Settlement or Return. Finnish Emigrants (1860-1930) in the International Overseas Migration Movement. Migration Studies C 5. Turku, The Migration Institute, 1979. 275 s. Historisk Tidsskrift, [S. l.], v. 14, 1983. DOI: 10.7146/ht.v14i0.52598. Disponível em: https://tidsskrift.dk/historisktidsskrift/article/view/52598. Acesso em: 26 aug. 2026.