Railway applications - Track - Concrete sleepers and bearers - Part 4: Prestressed bearers for switches and crossings; German version EN 13230-4:2009— 24 стр.
Railway applications - Track - Concrete sleepers and bearers - Part 4: Prestressed bearers for switches and crossings; German version EN 13230-4:2016— 24 стр.
Railway applications - Track; Concrete sleepers and bearers - Part 4: Prestressed bearers for switches and crossings; German version EN 13230-4:2002— 18 стр.
Railway applications - Track; Concrete sleepers and bearers - Part 4: Prestressed bearers for switches and crossings; German version EN 13230-4:2002— 18 стр.
Railway applications - Track - Concrete sleepers and bearers - Part 4: Prestressed bearers for switches and crossings; German version EN 13230-4:2016— 24 стр.