PULLIAINEN, E.; SAARI, L. The occurrence of the Two-barred Crossbill Loxia leucoptera in NE Finland. Ornis Fennica, [S. l.], v. 53, n. 2, p. 46, 1976. Disponível em: https://ornisfennica.journal.fi/article/view/132897. Acesso em: 21 sep. 2024.