Ščevková , Jana, Janka Lafférsová, Jozef Dušička, and Mária Tropeková. “Variability in the Betula Pollen Concentrations in the Atmosphere of Six Urban Areas in Slovakia in 2018”. Alergoprofil 16, no. 2 (June 25, 2020): 21-24. Accessed July 3, 2024. https://journalsmededu.pl/index.php/alergoprofil/article/view/1033.