21
by Golds, Mark
Published 2002
22
by Fisher, Mary Pat
Published 1999
23
Published 1999
24
by O'Conner, Patricia T.
Published 1999
25
Published 1979
26
by Haja Mohideen
Published 1997
27
by Sichel, Daniel E.
Published 1997
28
by Mokhtar Selat
Published 1998
29
by Lim, Kit Siang
Published 1986
30
31
by Anderson, W. H. Locke, 1933-
Published 1983
32
by Sun-tzu, 6th cent. B.C.
Published 1971
33
by Deming, W. Edwards
Published 2000
34
35
by Bolt, Paul J.
Published 2000
36
Published 1992
37
by Shneidman, Noah Norman.
Published 1979
38
Published 1993
39
Published 1987
40
by Reid, Anna
Published 1997