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Potential means of cost reduction in grade crossing automatic gate systems. Volume II : Improved gate arm concepts for railroad/highway grade crossings. Final report Duttera, James ; Friedland, Martin

Av: Medverkande: Utgivningsinformation: Washington DC U.S. Department of Transportation, 1977; Federal Railroad Administration, ; Gulf and Western AD&E Center, Beskrivning: 54 sÄmnen: Onlineresurser:
Exemplartyp: Rapport, konferenser, monografier
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