Columbia subject headings:
Aḥmad ibn Idrīs, 1749-1837--Correspondence.
Sufis--Morocco--Correspondence.
Harvard subject headings:
Aḥmad ibn Idrīs, 1749-1837--Correspondence.
Sufis--Morocco--Correspondence.
Princeton subject headings:
Aḥmad ibn Idrīs, 1749-1837--Correspondence.
Sufis--Morocco--Correspondence.