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Nur
Osman El Hassan M.
FR
Abes
20200304
AFNOR
Aspects of population change and development in the Sudan : proceedings of the Second National Population Conference, Khartoum, The Sudan, 26-28 April 1982 / edited by Abdel Aziz M. Farah, Osman El. H. M. Nur, Taj El. A. Eldawi, 1982
Nur, Osman El Hassan M.