Korwel-Lejkowska, B. 2020. TRANSFORMATION OF THE LANDSCAPE STRUCTURE OF THE SELECTED TESTING GROUNDS IN THE TRI-CITY AGGLOMERATION IN THE YEARS 1985–2012. Quaestiones Geographicae. 39, 2 (Mar. 2020), 31–42. DOI:https://doi.org/10.2478/quageo-2020-0011.