Macias, Andrzej, and Marta Dryjer. “Forest Cover Dynamics in the City of Poznań from 1830 to 2004”. Quaestiones Geographicae 29, no. 3 (September 23, 2010): 47–57. Accessed July 17, 2024. https://pressto.amu.edu.pl/index.php/qg/article/view/v10117-010-0022-5.