[Contribution of A. N. Sysin to creating the theoretical and practical bases of sanitation in the USSR].
D049672:History, 19th Century; D049673:History, 20th Century; D006920:Hygiene / Q000266:history; D012499:Sanitation / Q000266:history*; D014586:USSR
Vklad A. N. Sysina v sozdanie teoreticheskikh i prakticheskikh osnov sanitarnogo dela v SSSR