Columbia subject headings:
Trinidad--Economic conditions.
Trinidad--Emigration and immigration.
Trinidad--Social conditions.
Harvard subject headings:
Agriculture--Economic aspects--Trinidad--History--18th century.
Trinidad--Commerce--History--18th century.
Trinidad--Economic conditions.
Trinidad--Population--History--18th century.
Trinidad--Social conditions.
Princeton subject headings:
Agriculture--Economic aspects--Trinidad--History--18th century.
Trinidad--Commerce--History--18th century.
Trinidad--Economic conditions.
Trinidad--Population--History--18th century.
Trinidad--Social conditions.