61
by Bugnion, Francois
Published 1977
62
by Tompson, William
Published 2003
63
Published 2006
64
Published 1995
65
66
by Holt, P. M
Published 1979
67
Published 1994
68
by Ravenholt, Albert
Published 1962
69
70
by Ebenstein, William, 1910-
Published 1957
71
by Kruger, Rayne
Published 2003
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72
by Dunkley, Graham
Published 2000
73
by Spector, Ronald H, 1943-
Published 1985
74
by Lal, Brij V.
Published 1992
75
Published 1980
76
Published 2007
77
by Burns, E. Bradford
Published 1994
78
by Smith, David J, 1968-
Published 2002
79
80
by Payne, Robert
Published 1960