Palmgren, P. (1935) “Ein Exemplar von Phalacrocorax perspicillatus Pall. in den Sammlungen des zoologischen Museums in Helsingfors”, Ornis Fennica, 12(3), pp. 78–80. Available at: https://ornisfennica.journal.fi/article/view/132328 (Accessed: 26December2024).