Columbia subject headings:
Conference papers and proceedings.
Trucking--Taxation--Europe--Congresses.
Harvard subject headings:
Trucking--Taxation--Europe--Congresses.
Trucking--Taxation--Europe.
Princeton subject headings:
Roads--Europe--Maintenance and repair--Finance--Congresses.
Transportation and state--Europe--Congresses.
Trucking--Taxation--Europe--Congresses.