Pravilnik za tekhnicheska eksploatat͡s︡ii͡a︡ na zheleznit͡s︡ite (PTE)
Pravilnik za tekhnicheska eksploatat͡s︡ii͡a︡ na zheleznit͡s︡ite (PTE)
v sila ot-- 1990.
Bulgaria.
Details
OL Work ID
OL15271058W
Subjects
Safety regulations
Railroads
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