Columbia subject headings:
Counterinsurgency--Spain--País Vasco.
ETA (Organization)
Grupos Antiterroristas de Liberación (Spain)
País Vasco (Spain)--Politics and government--20th century.
Political crimes and offenses--Spain--País Vasco.
Harvard subject headings:
Counterinsurgency--Spain--País Vasco.
ETA (Organization)
Grupos Antiterroristas de Liberación (Spain)
País Vasco (Spain)--Politics and government--20th century.
Political crimes and offenses--Spain--País Vasco.
Princeton subject headings: