Columbia subject headings:
Freedom choice of employment--European Union countries.
Freedom of movement--European Union countries.
Professions--Law and legislation--European Union countries.
Service industries--Law and legislation--European Union countries.
Harvard subject headings:
Free choice of employment--European Union countries.
Freedom of movement--European Union countries
Professions--Law and legislation--European Union countries.
Service industries--Law and legislation--European Union countries
Princeton subject headings: