Columbia subject headings:
Capitalism--Puerto Rico--History.
Investments--Puerto Rico--History.
Puerto Rico--Commerce--History.
Puerto Rico--Economic conditions.
Puerto Rico--History.
Harvard subject headings:
Capitalism--Puerto Rico--History.
Investments--Puerto Rico--History.
Puerto Rico--Commerce--History.
Puerto Rico--Economic conditions
Puerto Rico--History
Princeton subject headings:
Capitalism--Puerto Rico--History.
Investments--Puerto Rico--History.
Puerto Rico--Commerce--History.
Puerto Rico--Economic conditions.
Puerto Rico--History.