Columbia subject headings:
Harvard subject headings:
Politicians--Sudan--Correspondence.
Sudan--History--Civil War, 1983-2005.
Sudan--Politics and government--1985-
Princeton subject headings:
Garang, John, 1945-2005--Correspondence.
Mahdī, al-Ṣādiq, 1935---Correspondence.
Sudan--History.
Sudan--Politics and government.