[30 years of the activities of the Polish Society of Public Health (on its 90th anniversary)].
Korczak
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CW
D049673:History, 20th Century; D011044:Poland; D011634:Public Health / Q000266:history*; D012425:Russia (Pre-1917); D012955:Societies, Medical / Q000266:history*
30 lat działalności polskiego towarzystwa higienicznego w jubileuszu 90-lecia.