Wintering areas of Great Black-backed and Herring Gulls from Heinäsaaret, the arctic USSR, and the northern Baltic in 1930–40
Viittaaminen
Kilpi, M., & Saurola, P. (1983). Wintering areas of Great Black-backed and Herring Gulls from Heinäsaaret, the arctic USSR, and the northern Baltic in 1930–40. Ornis Fennica, 60(3), 91–93. Noudettu osoitteesta https://ornisfennica.journal.fi/article/view/133135
