Collins, Robert O. 1933- Egypt and the Sudan / Egypt & the Sudan. Robert O. Collins, Robert L. Tignor. - Englewood Cliffs, N.J. : Prentice-Hall, 1967. - vi, 180 pages : map ; 21 cm. - Modern nations in historical perspective. Includes bibliography and index. Subjects--Geographic Terms: Egypt--HistorySudan--History Dewey Class. No.: 962