LDR 00696naa#a2200181#i#450# 001 EN\\bibl\81858 005 20241104235956.1 011 ## _a2412-9186 100 ## _a20170625b2017####ek#y0engy0150####ca 101 0# _aRUS 102 ## _aRU 200 1# _aDevelopment of signaling devices in the period of imperialism (1906-1917). Part 2: Regulation of traffic, electric rod system and open line block _eJournal article 210 1# _aSaint-Petersburg _cFSBEI HE "Emperor Alexander I St. Petersburg State Transport University" _d2017 215 ## _a9 с. 608 ## _aJournal article _2local 675 ## _aМеры безопасности. Сигналы. 656.25 _zRUS 700 #1 _aLupal _gNicolay V 856 4# _aatjournal.ru _u