Columbia subject headings:
European Conference of Ministers of Transport--Periodicals.
Transportation and state--Europe--Periodicals.
Transportation--Europe--Periodicals.
Harvard subject headings:
European Conference of Ministers of Transport--Periodicals.
Transportation and state--Europe--Periodicals.
Transportation--Europe--Periodicals.
Princeton subject headings:
European Conference of Ministers of Transport--Periodicals.
Periodicals.
Transportation and state--Europe--Periodicals.
Transportation--Europe--Periodicals.