Quarre, L. (1963). Simplification and mechanisation of fare collection on public transport vehicles. Brussels: International Union of Public Transport.
Παραπομπή Chicago StyleQuarre, L. Simplification and Mechanisation of Fare Collection On Public Transport Vehicles. Brussels: International Union of Public Transport, 1963.
Παραπομπή MLAQuarre, L. Simplification and Mechanisation of Fare Collection On Public Transport Vehicles. Brussels: International Union of Public Transport, 1963.
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