00763naa#a2200181#i#450# EN\\bibl\104374 20250926141101.5 1815-588X 20250919b2025####ek#y0engy0150####ca RU On Restoring Cantilever Stone Staircases in the Architecture of St. Petersburg. Part 2. How to Calculate a Straight Flight Staircase with Plane Treads Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2025 10 с. Journal article local Лестницы. Пандусы. Лифты. Эскалаторы. 692.6 Weber Mikhail Davidowich Kuznecov Anatoliy Vsevolodovich izvestiapgups.editorum.ru