00709naa#a2200181#i#4500001001500000005001700015011001400032100004100046101000800087102000700095200018700102210010100289215001100390608002700401675006700428700001500495856001700510EN\\bibl\8181920241123170948.6##a2412-9186##a20160625b2016####ek#y0engy0150####ca0#aRUS##aRU1#aDevelopment of signalling, centralization and blocking devices during the period of industrial capitalism (1861-1900). Part 4: Centralization of switches and signalseJournal article1#aSaint-PetersburgcFSBEI HE "Emperor Alexander I St. Petersburg State Transport University"d2016##a10 с.##aJournal article2local##aМеры безопасности. Сигналы. 656.25zRUS#1aLupalgN V4#aatjournal.ru