61
by Carnegie, Dale
Published 1991
62
by Zanden, James W. Vander
Published 1997
63
64
65
by Cloninger, Susan C.
Published 1996
66
by Weiten, Wayne
Published 1997
67
68
69
by Matthews, Andrew
Published 1996
70
71
by Chernow, Fred B.
Published 1997
72
by Hauck, Paul Dr.
Published 1995
73
Published 1996
74
75
by Kamaluddin, Shahreen
Published 1993
76
77
78
79
by Feldman, Robert S.
Published 1997
80
by Boatright, John R.
Published 1997