[Problems of workers in the writings of Polish physicians at the turn of 19th century].
D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009787:Occupational Medicine / Q000266:history*; D011044:Poland; D012425:Russia (Pre-1917)
Problemy robotnicze w pismach lekarzy polskich przełomu XIX i XX wieku.