VERMEER, Kees. Variation in Density of Breeding Ducks Across the Aspen Parklands and Grasslands of Canada. Blue Jay, [S. l.], v. 30, n. 3, 1972. DOI: 10.29173/bluejay3782. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/3782. Acesso em: 22 jul. 2024.