00690naa#a2200181#i#450# EN\\bibl\100042 20250621172120.6 1815-588X 20250619b2025####ek#y0engy0150####ca RU On Restoring Cantilever Stone Staircases in the Architecture of St. Petersburg. Part 1 Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2025 21 с. Journal article local Лестницы. Пандусы. Лифты. Эскалаторы. 692.6 Weber Mikhail Davidowich Kuznecov Anatoliy Vsevolodovich brni.editorum.ru