Europa: investigaciòn ORE sobre mantenimiento de infraestructura ferroviaria =   Europe: ORE research on railway infrastructure maintenance  
 Europe: ORE research on railway infrastructure maintenance   

<br/><br/><label>Subjects--Topical Terms: </label><br/>FERROCARRILES<br/>TRANSPORTE <br/>MANTENIMIENTO<br/>INFRAESTRUCTURA FERROVIARIA
<br/><br/><label>Universal Decimal Class. No.: </label>H656.2 BOL