Liberacki, D., P. Stachowski, and D. Gębski. “THE SOUTHERN PART OF POZNAŃ – CONCEPT OF DEVELOPMENT THE FORMER CLAY PITS”. Acta Scientiarum Polonorum Administratio Locorum, vol. 16, no. 3, Sept. 2017, pp. 187-96, doi:10.31648/aspal.458.