Columbia subject headings:
Albizu Campos, Pedro, 1891-1965.
Muñoz Marín, Luis, 1898-1980.
Nationalism--Puerto Rico--History--20th century.
Pedreira, Antonio S., 1898 or 1899-1939.
Puerto Rico--Civilization--20th century.
Puerto Rico--Civilization--American influences.
Harvard subject headings:
Albizu Campos, Pedro, 1891-1965--Political and social views.
Muñoz Marín, Luis, 1898-1980--Political and social views.
Nationalism--Puerto Rico--History--20th century
Nationalism--Puerto Rico--History.
Pedreira, Antonio S., 1898 or 1899-1939--Political and social views.
Puerto Rico--Dependency on the United States.
Puerto Rico--History--Autonomy and independence movements.
Puerto Rico--Politics and government--1898-1952.
Self-determination, National--Puerto Rico--History--20th century.
Princeton subject headings: