Omer, Bashir Research methods in the social sciences : a quest for relevant approaches for Africa Bashir Omer, Mohamed Fadlalla, G. Fassil Riros - Khartoum. OSSREA, 1986. - iv,230p. : 25 cm. Includes bibliographical references Subjects--Topical Terms: Research methodologyPolitical scienceResearch LC Class. No.: IKR HM33.R4