Columbia subject headings:
Data protection--Law and legislation--European Union countries.
Electronic surveillance--Law and legislation--European Union countries.
Privacy, Right of--European Union countries.
Terrorism--Prevention--Law and legislation--European Union countries.
Harvard subject headings:
Data protection--Law and legislation--European Union countries
Electronic surveillance--Law and legislation--European Union countries.
Privacy, Right of--European Union countries
Terrorism--Prevention--Law and legislation--European Union countries.
Princeton subject headings: