Modrzyńska , Katarzyna, Agnieszka Lipiec, Ewa Kalinowska, and Piotr Rapiejko. “Characteristics of Pollen Seasons of Hazel, Alder and Birch in Drawsko Pomorskie in 2014”. Alergoprofil 10, no. 2 (June 9, 2014): 17-20. Accessed October 3, 2025. https://www.journalsmededu.pl/index.php/alergoprofil/article/view/794.