[Four periods of the history of Russian hygiene].
Korostelev
N B
NB
D049668:History, 15th Century; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049691:History, Medieval; D006920:Hygiene / Q000266:history*; D009031:Moscow; D012425:Russia (Pre-1917); D012499:Sanitation / Q000266:history; D014586:USSR