1
by Vickerman, R. W.
Published 1992
2
Published 1991
3
Published 1983
4
Published 1996
5
6
by Miall, Hugh
Published 1993
7
Published 1996
8
Published 1992
9
Published 1996
10
by Kaase, Max
Published 1995
11
Published 1996
12
by Clutterbuck, Richard
Published 1990
13
Published 1990
14
by Galtung, Johan
Published 1989
15
16
by Denitch, Bogdan Denis
Published 1990
17
Published 1989
18
by George, James L, 1923-
Published 1990
19
Published 1990
20
Published 1993