61
by Mazarr, Michael J, 1965-
Published 1999
62
Published 2005
63
Published 2010
64
65
by Lipton, Michael
Published 1975
66
Published 1973
67
by Fisk, Robert.
Published 2005
68
Published 1997
69
by Galbraith, John Kenneth, 1908-
Published 1969
70
Published 1963
71
Published 2011
72
by Polk, William Roe, 1929-
Published 1965
73
Published 2003
74
75
by Sodhy, Pamela
Published 1991
76
Published 1979
77
by Gortemaker, Manfred
Published 1994
78
by Erlich, Haggai
Published 2002
79
80