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 13230-4:2009— 24 стр.
Railway applications - Track - Concrete sleepers and bearers - Part 4: Prestressed bearers for switches and crossings; German version prEN 13230-4:2014
Railway applications - Track - Concrete sleepers and bearers - Part 4: Prestressed bearers for switches and crossings; German version EN 13230-4:2009— 24 стр.