Columbia subject headings:
Harvard subject headings:
Albizu Campos, Pedro, 1891-1965.
Freedom of speech--Puerto Rico.
Puerto Rico--Politics and government--1898-1952.
Self-determination, National--Puerto Rico
Trials (Political crimes and offenses)--Puerto Rico--San Juan.
Princeton subject headings:
Civil rights--Puerto Rico.
Freedom of speech--Puerto Rico.
Nationalism--Puerto Rico.
Puerto Rico--Politics and government--1898-1952.
Self-determination, National--Puerto Rico.