Kasprzyk , Idalia. “Start of Alder and Hazel Pollen Seasons and Start of Pollination in Different Habitats in Rzeszów”. Alergoprofil 6, no. 2 (June 30, 2010): 32-37. Accessed October 3, 2025. https://journalsmededu.pl/index.php/alergoprofil/article/view/186.