1
by Clayton
Published 1980
2
3
by Oakley
Published 1987
4
by Han Jian
Published 2000
5
by Sandrock
Published 2001
6
by Henderson, 1943-
Published 1996
7
by Strong
Published 1996
8
by Coe
Published 1981
9
by Henderson
Published 1999
10
by Noakes
Published 1995
11
by Fixx
Published 1981
12
by Olsen
Published 1984
13
by Daniel, 1933
Published 1998
14
by Favret
Published 1997
15
by Jones
Published 1992
16
17
by Axford
Published 1995
18
by Daly
Published 2000
19
by Martin
Published 1991
20
by Carr
Published 1991