Columbia subject headings:
Harvard subject headings:
Morocco--Politics and government--1961-1999--Congresses.
Ḥizb al-Taqaddum wa-al-Ishtirākīyah--Congresses.
Princeton subject headings:
Ḥizb al-Taqaddum wa-al-Ishtirākīyah--Congresses.
Morocco--Politics and government--Congresses.