[Problems of rural health protection in the works of N.A. Semashko; on the occasion of the fifth anniversary of his death].
D000846:Anniversaries and Special Events; D003643:Death; D049672:History, 19th Century; D049673:History, 20th Century; D011634:Public Health; D012423:Rural Health; D014937:Work
BIOGRAPHIES; PUBLIC HEALTH
Nekotorye voprosy sel'skogo zdravookhraneniia v trudakh N.A. Semashko; k piatiletiiu so dnia smerti.