Columbia subject headings:
Governors--Puerto Rico--Inaugural addresses.
Puerto Rico--Economic conditions.
Puerto Rico--History.
Puerto Rico--Social conditions.
Harvard subject headings:
Governors--Puerto Rico--Inaugural addresses.
Puerto Rico--Economic conditions
Puerto Rico--History
Puerto Rico--Social conditions.
Princeton subject headings:
Governors--Puerto Rico--Inaugural addresses.
Puerto Rico--Economic conditions.
Puerto Rico--History.
Puerto Rico--Social conditions.