Columbia subject headings:
Caribbean Area--Economic conditions.
Caribbean Area--Emigration and immigration--Economic aspects.
United States--Emigration and immigration.
Harvard subject headings:
Caribbean Area--Economic conditions.
Caribbean Area--Emigration and immigration--Economic aspects.
United States--Emigration and immigration.
Princeton subject headings:
Caribbean Area--Economic conditions.
Caribbean Area--Emigration and immigration--Economic aspects.
United States--Emigration and immigration.