LDR 00673naa#a2200181#i#450# 001 EN\\bibl\81868 005 20241121210719.4 011 ## _a2412-9186 100 ## _a20170925b2017####ek#y0engy0150####ca 101 0# _aRUS 102 ## _aRU 200 1# _aSignals and interlocking development during imperialism (1906-1917). Part 3: Mechanical interlocking of points and signals _eJournal article 210 1# _aSaint-Petersburg _cFSBEI HE "Emperor Alexander I St. Petersburg State Transport University" _d2017 215 ## _a11 с. 608 ## _aJournal article _2local 675 ## _aМеры безопасности. Сигналы. 656.25 _zRUS 700 #1 _aLupal _gNicolay V 856 4# _aatjournal.ru _u