[Materials on the history of the sanitary organization of the Lower Volga Region].
D049672:History, 19th Century; D049673:History, 20th Century; D011635:Public Health Administration / Q000266:history*; D012426:Russia; D012425:Russia (Pre-1917); D012499:Sanitation / Q000266:history*
Materialy k istorii sanitarnoĭ organizatsii Nizhnego Povolzh'ia.