61
by Griffiths, Martin, 1961-
Published 2002
62
Published 2002
63
by Huntington, Samuel P.
Published 1991
64
Published 1980
65
66
by Salter, Mark B.
Published 2002
67
by Summers, Harry G.
Published 1995
68
by Brogan, D. W.
Published 1963
69
Published 1973
70
by Calvocoressi, Peter
Published 1969
71
by Miller, Lynn H.
Published 1985
72
Published 1981
73
by Huntington, Samuel P.
Published 1996
74
Published 1999
75
Published 1984
76
by White, Brian
Published 1992
77
by Geldenhuys, Deon
Published 1998
78
79
80
Published 2007