Columbia subject headings:
Islam--20th century--Congresses.
Ḥusayn, Muḥammad Muḥammad--Congresses.
Harvard subject headings:
Islam--20th century
Ḥusayn, Muḥammad Muḥammad--Criticism and interpretation.
Princeton subject headings:
Ḥusayn, Muḥammad Muḥammad.
Islam--20th century.