1
Published 1990
2
by Rubenberg, Cheryl A.
Published 2003
3
by Ramos, Fidel V, 1928-
Published 1996
4
Published 1984
5
Published 1985
6
Published 1969
7
8
by Peters, Joel
Published 1996
9
10
Published 1992
11
Published 1983
12
13
by Usher, Graham, 1958-
Published 1999
14
Published 1992
15
by Quandt, William B.
Published 2001
16
17
Published 2001
18
Published 2011
19
by Cuellar, Javier Perez De
Published 1986
20
by Brock-Utne, Birgit, 1938-
Published 1989