1
by Carney, John P.
Published 1975
2
Published 1978
3
by Asher, Herbert B.
Published 1980
4
by Harris, Stuart, 1931-
Published 1983
5
Published 1984
6
by Garang, John, 1945-
Published 1992
7
Published 1982
8
Published 1994
9
Published 1990
10
Published 1981
11
by First, Ruth, 1925-1982
Published 1970
12
by Nash, Henry T.
Published 1985
13
by Oakes, John B.
Published 1961
14
by Moss, Robert, 1946-
Published 1973
15
by Nyangoni, Wellington Winter
Published 1985
16
by Ibrahim Syukri
Published 2002
17
by Watts, William, 1930-
Published 1978
18
by Eckstein, Susan, 1942-
Published 1994
19
by Gurtov, Melvin
Published 1980
20
Published 1994