On the History, Ecology and Ethology of the Mallards (Anas platyrhynchos L.) overwintering in Finland
Viittaaminen
Pulliainen, E. (1963). On the History, Ecology and Ethology of the Mallards (Anas platyrhynchos L.) overwintering in Finland. Ornis Fennica, 40(2), 46–66. Noudettu osoitteesta https://ornisfennica.journal.fi/article/view/132682