[Hygienic standardization of structure of staircases and considerations on requirement for elevators in five-story house].
D004607:Elevators and Escalators; D006798:Housing; D012015:Reference Standards
HOUSING
Gigienicheskoe normirovanie ustroistva lestnitsy i obosnovanie neobkhodimosti liftov v piatietazhnykh zhilykh domakh.