Ulfvens J. Mercury content in eggs of the Great Crested Grebe Podiceps cristatus and the Horned Grebe Podiceps auritus in the archipelago of Korsnäs, Gulf of Bothnia. Ornis Fenn [Internet]. 1986Sep.30 [cited 2024Nov.23];63(3):92–93. Available from: https://ornisfennica.journal.fi/article/view/133214