Columbia subject headings:
ʻAqqād, ʻAbbās Maḥmūd, 1889-1964.
Harvard subject headings:
ʻAqqād, ʻAbbās Maḥmūd, 1889-1964.
Princeton subject headings:
ʻAqqād, ʻAbbās Maḥmūd, 1889-1964.