81
by Pimm, Stuart L
Published 1991
82
by Hawking, Stephen W.
Published 1988
83
Published 1993
84
by Hancox, David
Published 1999
85
Published 1991
86
Published 1991
87
Published 2006
88
Published 1990
89
by Fernandez, Josie M.
Published 2006
90
by Trefil, James S, 1938-
Published 1988
91
Published 1998
92
by McNab, Chris
Published 2006
93
by Harrisson, Barbara
Published 1992
94
Published 1991
95
by Wan Hassan Wan Embong, 1947-
Published 2010
96
Published 1992
97
Published 1991
98
by Hawking, S. W.
Published 1988
99
by Kawabata,Hiroto,, 1964-
Published 2020
100