1
Published 2001
2
Published 2003
3
4
Published 1992
5
by Naisbitt, John
Published 1996
6
Published 1992
7
by Figgie, Harry E.
Published 1993
8
Published 2005
9
10
Published 1998
11
Published 2002
12
Published 1997
13
by Simai, Mihaly
Published 1995
14
by Mazarr, Michael J, 1965-
Published 1999
15
Published 1998
16
Published 1996
17
by Reich, Robert B.
Published 1992
18
Published 2003
19
by Enright, MIchael J.
Published 1997
20
by Maddison, Angus
Published 1998