[80th anniversary of the Polish Hygiene Society (1898-1978)].
D049672:History, 19th Century; D049673:History, 20th Century; D006920:Hygiene; D011044:Poland; D011634:Public Health / Q000266:history*; D012955:Societies, Medical / Q000266:history*
80-letie Pol'skogo Gigienicheskogo Obshchestva (1898-1978).