1
Published 1975
2
Published 2006
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3
by McCoubrey, Hilaire
Published 1992
4
by Greffenius, Steven, 1954-
Published 1993
5
by Stevens, Anthony
Published 2004
6
by Naill, Ferguson
Published 2006
7
Published 2003
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9
Published 2000
10
by Hinde, Robert
Published 2003
11
Published 1986
12
13
Published 1984
14
by Galtung, Johan.
Published 2002
15
by Stevens, Anthony
Published 2004
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16
Published 1980
17
Published 2001
18
Published 2005
19
20
Published 1992