Modrzyńska , K., Lipiec , A., Kalinowska , E., & Rapiejko , P. (2014). Characteristics of pollen seasons of hazel, alder and birch in Drawsko Pomorskie in 2014. Alergoprofil, 10(2), 17-20. Retrieved from https://journalsmededu.pl/index.php/alergoprofil/article/view/794