61
by Willis
Published 1991
62
Published 1984
63
by Aves
Published 1994
64
by Nakamura
Published 1990
65
by Betts
Published 1993
66
by Brommer
Published 1986
67
by Goldsmith
Published 1980
68
by Wozencroft
Published 1988
69
by Menten
Published 1979
70
Published 1993
71
by Swann
Published 1989
72
Published 1994
73
by Wilde
Published 1991
74
by Nice
Published 1993
75
by Robinson
Published 1991
76
by Brigham
Published 1991
77
by Nelson
Published 1989
78
Published 1994
79
by Rosentswieg
Published 1993
80
by Nou
Published 1993