YACOUB AL-HIJJI THE NATIONAL COUNCIL FOR REASEARCH: IN THE SUDAN PAST, PRESENT AND FUTURE / YACOUB AL-HIJJI - [S.N] : NCR ، 1975 - 84 P Subjects--Topical Terms: DEVELOPMENTSUDANSUDAN - ECONOMICSUDAN - ECONSMIC POLICY Dewey Class. No.: 338.9009624 / Y N