1
by Nixon, Richard M, 1913-
Published 1984
2
by Richmond, Oliver P.
Published 2008
3
4
by Ziegler, David W.
Published 1984
5
Published 1998
6
by Burton, John W, 1915-
Published 1962
7
8
9
by Pavlovsky, V.
Published 1977
10
by Galtung, Johan
Published 1989
11
by Mourin, Jennifer
Published 1994
12
13
by Hauss, Charles
Published 1996
14
by Galtung, Johan
Published 1996
15