title: [30 years of the Polish People's Republic].
mesh_terms: D002309:Cardiology / Q000266:history*; D049673:History, 20th Century; D010506:Periodicals as Topic / Q000266:history; D011044:Poland; D012955:Societies, Medical / Q000266:history*
vernacular_title: W trzydziestolecie Polskiej Rzeczypospolitej Ludowej.