FILBRANDT-CZAJA, Anna and ADAMSKA, Edyta. The analysis of the Corylus, Alnus and Betula pollen seasons in Toruń in 2014 and 2016. Ecological Questions. Online. 9 May 2018. Vol. 29, no. 2, pp. 51-60. [Accessed 4 May 2024]. DOI 10.12775/EQ.2018.018.