XV. Európai Közlekedési Kongresszus és a X. Nemzetközi Útügyi Konferencia
XMM: Advancing Science with the High-Throughput X-Ray Spectroscopy Mission
Worldwide Rail Market Study forecasts global boom for rail supply industry to 2016
World pipeline construction plans show increase into next century
Wings across Europe : towards an efficient European air transport system
Wings across Europe : towards an efficient European air transport system
Why do we need railways? : international seminar 19 - 20 January 1995