[The occurrence of skin diseases and the status of dermatologic service to the population in the pre-revolutionary Chuvash Republic].
D049672:History, 19th Century; D006801:Humans; D012423:Rural Health / Q000266:history*; D012425:Russia (Pre-1917); D012871:Skin Diseases / Q000266:history*
Zabolevaemost' kozhnymi bolezniami i sostoianie dermatologicheskoĭ pomoshchi naseleniiu v dorevoliutsionnoĭ Chuvashii.