. . "Transports publics." . . . . . . . . . . . . . . . . "Urban rail transit: its economics and technology" . . . "Urban rail transit: its economics and technology"@en . . . "Urban rail transit its economics and technology"@en . "Urban rail transit its economics and technology" . . . . . . . "Urban rail transit: Its economics and technology" . . . "Urban rail transit : its economics and Technology"@en . . . "Urban rail transit : its economics and technology"@en . "Urban rail transit : its economics and technology" . . . . "Spoorverkeer." . . "Planning in het bedrijf." . . "Transporttechniek." . . "Transports publics États-Unis." . .