1
Published 1996
2
Published 1989
3
Published 1991
4
Published 1991
5
Published 1989
6
Published 1995
7
8
Published 1987
9
10
Published 1980
11
Published 1981
12
13
Published 1970
14
Published 1988
15
Published 1980
16
Published 1970
17
Published 1989
18
Published 1997
19
Published 1978
20
Published 1996