[80th anniversary of the Polish Society of Hygiene].
D049672:History, 19th Century; D049673:History, 20th Century; D006920:Hygiene; D011044:Poland; D011634:Public Health / Q000266:history*; D012425:Russia (Pre-1917); D012955:Societies, Medical / Q000266:history*
Jubileusz 80-lecia Polskiego Towarzystwa Higienicznego.