Columbia subject headings:
Arab Spring, 2010---Congresses.
Arab countries--Politics and government--21st century--Congresses.
Democratization--Arab countries--History--21st century--Congresses.
Protest movements--Arab countries--History--21st century--Congresses.
Harvard subject headings:
Arab Spring, 2010---Congresses.
Arab countries--Politics and government--21st century--Congresses.
Democratization--Arab countries--History--21st century--Congresses.
Protest movements--Arab countries--History--21st century--Congresses.
Princeton subject headings: