21
by VAUGHAN
Published 1989
22
by BENN
Published 1992
23
by CATLIN
Published 1987
24
Published 1996
25
Published 1996
26
Published 1996
27
Published 1971
28
Published 1984
29
by DAVIS
Published 1995
30
by PEYREFITTE
Published 1973
31
Published 1971
32
by BRUMMER
Published 1994
33
by TOWNSEND
Published 1983
34
35
by DANIKEN
Published 1981
36
by KAGAN
Published 2001
37
by LERNER
Published 1998
38
Published 1995
39
by Jones
Published 1997
40
by DeHaven
Published 1998