TOIVARI, L.; LINDQVIST, O. The Marsh Warbler (Acrocephalus palustris) and Blyth´s Reed Warbler (Acrocephalus dumetorum) in the district of Lappeenranta, Summer 1960. Ornis Fennica, [S. l.], v. 38, n. 3–4, p. 93–95, 1961. Disponível em: https://ornisfennica.journal.fi/article/view/132663. Acesso em: 19 sep. 2024.