61
by Montbrial, Thierryde
Published 1989
62
63
64
65
Published 1991
66
by Howard, Russell D.
Published 2006
67
68
by Marsh, Steve, 1967-
Published 2005
69
by Chubin, Shahram
Published 2002
70
Published 2006
71
72
Published 2003
73
Published 2006
74
75
by Collins, Alan, 1967-
Published 2005
76
Published 2007
77
Published 2006
78
by Hughes, Christopher W.
Published 2004
79
Published 2007
80
by Webber, Mark
Published 1996