HOUSTON, Mary. Twenty-Sixth Annual Saskatchewan Christmas Bird Count, 1967. Blue Jay, [S. l.], v. 26, n. 1, 1968. DOI: 10.29173/bluejay3277. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/3277. Acesso em: 10 apr. 2025.