Polish Law of 16 December 2016 on Principles of Management of State Property (in Polish) as consolidated 16 April 2020. 16. April 2020 You need to login to view this content. Please Login. Not a Member? Join Us Posted in CELIS-CONTENT and tagged 2016, 2020, CELIS-CONTENT-Government, CELIS-CONTENT-Legislation, EU-Member State, Europe, Poland, Real Estate Activities