Piotrowska , K., Weryszko-Chmielewska , E., Puc , M., Malkiewicz , M., Chłopek , K., Myszkowska , D., Świebocka , E. and Rapiejko , P. (2008) “The hornbeam in the air of selected Polish cities in 2008”, Alergoprofil, 4(2), pp. 60-63. Available at: https://www.journalsmededu.pl/index.php/alergoprofil/article/view/78 (Accessed: 30May2026).