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- Transportation issues, policies and r&d (6)
- Transportation infrastructure - roads, highways, bridges, airports and mass transit: transportation issues, policies and r&d (3)
- U.s. transit, transportation and infrastructure: considerations and developments (3)
- Transportation infrastructure - roads, highways, bridges, airports and mass transit (2)
- Transportation infrastructure-roads, highways, bridges, airports and mass transit: transportation issues, policies and r&d (1)
- Transportation issues policies and r&d (1)
- Transportation issues, policies and r&d: economic issues, problems and perspectives (1)
- U.s. transit, transportation infrastructure considerations and developments (1)
Transportplanering & transportpolitik
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