[A little-known article by N.A. Semashko].
D004522:Educational Status; D049672:History, 19th Century; D049673:History, 20th Century; D011634:Public Health / Q000266:history*; D012425:Russia (Pre-1917); D014586:USSR
Ob odnoĭ maloizvestnoĭ stat'e N.A. Semashko