Columbia subject headings:
Harvard subject headings:
Business logistics--Germany--Bremen--Congresses.
Harbors--Economic aspects--Germany--Bremen--Congresses.
Harbors--Germany--Bremen--Congresses.
Industrial location--Germany--Bremen--Congresses.
Princeton subject headings:
Business logistics--Germany--Bremen--Congresses.
Harbors--Economic aspects--Germany--Bremen--Congresses.
Harbors--Germany--Bremen--Congresses.
Industrial location--Germany--Bremen--Congresses.