1
Published 1998
2
Published 1999
3
4
Published 2001
5
by May
Published 1954
6
by Varna
Published 1974
7
Published 1979
8
Published 1966
9
10
by Silcock
Published 1964
11
12
Published 2004
13
14
Published 1987
15
by Sieh-Lee
Published 2000
16
by King
Published 1999
17
18
Published 2001
19
Published 1994
20
by Tiffen
Published 1978