Columbia subject headings:
Political prisoners--Sudan--Biography.
Qaddāl, Muḥammad Saʻīd.
Sijn Kūbar al-ʻUmūmī.
Harvard subject headings:
Princeton subject headings:
Human rights--Sudan.
Political prisoners--Sudan.
Prisons--Sudan.
Qaddāl, Muḥammad Saʻīd.