Columbia subject headings:
Opposition (Political science)--Sudan.
Sudan--Politics and government--20st century.
Tajammuʻ al-Waṭanī al-Dīmuqrāṭī al-Sūdānī.
Harvard subject headings:
Opposition (Political science)--Sudan.
Sudan--Politics and government--20st century.
Tajammuʻ al-Waṭanī al-Dīmuqrāṭī al-Sūdānī
Princeton subject headings:
Opposition (Political science)--Sudan.
Sudan--Politics and government.
Tajammuʻ al-Waṭanī al-Dīmuqrāṭī al-Sūdānī.