Columbia subject headings:
Harvard subject headings:
Africa, Central--Foreign economic relations.
Africa, West--Foreign economic relations.
Congo (Brazzaville)--Foreign economic relations.
Congo (Brazzaville)--Politics and government--1997-
Merchant marine--Africa, Central--History--20th century.
Merchant marine--Africa, West--History--20th century.
Merchant marine--Congo (Brazzaville)--History--20th century.
Princeton subject headings:
Africa, Central--Foreign economic relations.
Africa, West--Foreign economic relations.
Congo (Brazzaville)--Foreign economic relations.
Congo (Brazzaville)--Politics and government--1997-
Merchant marine--Africa, Central--History--20th century.
Merchant marine--Africa, West--History--20th century.
Merchant marine--Congo (Brazzaville)--History--20th century.
Shipping--Congo (Brazzaville).
Shipping--Politics and government.