1
Published 1999
2
Published 1975
3
4
by Prins, Gwyn
Published 2002
5
6
Published 1992
7
Published 2003
8
Published 1994
9
Published 1999
10
Published 1993
11
Published 2002
12
by Evans, Gareth, 1944-
Published 1993
13
by Huntley, James Robert
Published 1998
14
Published 1984
15
Published 1975
16
by Meiers, Franz-Josef
Published 1996
17
18
by Ratner, Steven R.
Published 1995
19
Published 1984
20
Published 1996