@ARTICLE{Piotrowska_Lidia_Spatial_2017, author={Piotrowska, Lidia}, number={vol. 49}, journal={Studia Regionalia}, howpublished={online}, year={2017}, publisher={Polish Academy of Sciences – Committee for Spatial Economy and Regional Planning and European Regional Science Association (ERSA) Polish Section}, title={Spatial planning – evolution of the system (1899–2017)}, URL={http://ochroma.man.poznan.pl/Content/103077/PDF/SR_49_Piotrowska.pdf}, doi={10.12657/studreg-49-02}, }