The bird sanctuary of Kesonsuo, a raised bog in North Karelia: its breeding bird assemblages, summer visitors and spring migrants
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Häyrinen, U., Järvinen, O., & Kouki, J. (1986). The bird sanctuary of Kesonsuo, a raised bog in North Karelia: its breeding bird assemblages, summer visitors and spring migrants. Ornis Fennica, 63(4), 97–111. Hämtad från https://ornisfennica.journal.fi/article/view/133215
