21
Published 1995
22
Published 1995
23
by Kelley, Stanley
Published 1960
24
Published 2002
25
by Patterson, Bradley H, 1921-
Published 2000
26
by Russell, Ruth B.
Published 1958
27
by Garthoff, Raymond L.
Published 1989
28
by Wallace, William, 1927-
Published 1994
29
by Deng, Francis Mading, 1938-
Published 1995
30
by Primakov, E.M.
Published 2004
31
by Pillar, Paul R, 1947-
Published 2001
32
by Scherer, Frederick M
Published 1994
33
by Lustig, Nora
Published 1992
34
by Betts, Richard K, 1947-
Published 1995
35
36
Published 1995
37
by O'Sullivan, Meghan L.
Published 2003
38
Published 1991
39
40
by Yager, Joseph A, 1916-
Published 1981