16.02.2026 23:21
 

2.749-84 (CT 5680-86) ,

08.09.2015

,

2.749-84

,

Unified system of design documentation.
Graphic identifications schemes Elements and means of railway signaling, centralization and blocking


2.749-84

(CT 5680-86)

01.01.85

, (), , , .

1. . 1.

1
.