00690naa#a2200181#i#450# EN\\bibl\81838 20250224034153.1 2412-9186 20161225b2016####ek#y0engy0150####ca RUS RU Development of signaling, centralization and blocking devices during the period of industrial capitalism (1861-1900). Part V: Check devices Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2016 10 с. Journal article local Меры безопасности. Сигналы. 656.25 RUS Lupal Nikolay V itt-pgups.ru