Kitowski, Ignacy, Agnieszka Sujak, Dariusz Wiącek, Wacław Strobel, Andrzej Komosa, and Marcin Stobiński. 2020. “Heavy Metals in Livers of Raptors from Eastern Poland – the Importance of Diet Composition”. Belgian Journal of Zoology 146 (1). https://doi.org/10.26496/bjz.2016.34.