61
62
by Long, Larry
Published 2004
63
by Elahi, Ata
Published 2001
64
by Pfaffenberger, Bryan
Published 2004
65
66
67
68
by Turban, Efraim
Published 2003
69
70
by Lehnert, Wendy G.
Published 2003
71
by Riccardi, Greg
Published 2003
72
73
Published 1988
74
by Barich, Tom E.
Published 2000
75
by McLaren, Bruce J.
Published 1999
76
77
78
by Daniel, Maria O'
Published 1999
79
80