[1]
Rajchel, D. and Rajchel, A. 2022. Kamionka Piast Pit in Opole as an Example of Developing and Upgrading Green Areas. Rozwój Regionalny i Polityka Regionalna. 59 (Nov. 2022), 53–70. DOI:https://doi.org/10.14746/rrpr.2022.59.05.