ULFVENS, J. Clutch size, productivity and population changes in a population of the Horned Grebe Podiceps auritus in an exposed habitat. Ornis Fennica, [S. l.], v. 66, n. 2, p. 75–77, 1989. Disponível em: https://ornisfennica.journal.fi/article/view/133279. Acesso em: 22 nov. 2024.