Columbia subject headings:
Harvard subject headings:
Cities and towns--Venezuela--History.
Coffee industry--Venezuela--History.
Petroleum industry and trade--Venezuela--History
Urbanization--Venezuela--History.
Venezuela--Economic conditions.
Princeton subject headings:
Cities and towns--Venezuela--History.
Coffee industry--Venezuela--History.
Petroleum industry and trade--Venezuela--History.
Urbanization--Venezuela--History.
Venezuela--Economic conditions.