[Problems of health protection of workers at Pirogov Congresses].
D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009787:Occupational Medicine / Q000266:history*; D012425:Russia (Pre-1917)
Voprosy okhrany zdorov'ia rabochikh na Pirogovaskikh s"ezdakh.