61
by Hill, Napoleon
Published 1988
62
by Cohen, Herb
Published 1990
63
by Robbins, Anthony
Published 1992
64
by Peck, M.Scott
Published 1987
65
by Robbins, Anthony
Published 1990
66
by Buskirk, Richard H.
Published 1987
67
by Peck, M.Scott
Published 1991
68
by Smith, Manuel J.
Published 1987
69
70
71
72
73
by Tarrant, John
Published 1986
74
75
76
77
78
by Elkind, David
Published 1989
79
by Robbins, Anthony
Published 1989
80
by Robbins, Anthony
Published 1989