Columbia subject headings:
Coastwise shipping--Venezuela--History.
Inland water transportation--Venezuela--Maracaibo Lake Region--History.
Transportation--Venezuela, Central West--History.
Venezuela, Central West--Commerce--History.
Harvard subject headings:
Coastwise shipping--Venezuela--History.
Inland water transportation--Venezuela--Maracaibo Lake Region--History.
Transportation--Venezuela, Central West--History.
Venezuela, Central West--Commerce--History.
Princeton subject headings:
Coastwise shipping--Venezuela--History.
Inland water transportation--Venezuela--Maracaibo Lake Region--History.
Transportation--Venezuela, Central West--History.
Venezuela, Central West--Commerce--History.