61
by Lardy, Nicholas R.
Published 1992
62
Published 2002
63
by Qingzhao, Hua
Published 1993
64
Published 1992
65
Published 1995
66
by Warner, Mariana, 1946-
Published 1972
67
by Teiwes, Frederick C.
Published 1996
68
by Dernberger, Robert F.
Published 1988
69
Published 1995
70
by Zhen, Quan Wang
Published 1995
71
by Cotterell, Arthur
Published 1993
72
by Harding, Harry
Published 1992
73
by Hughes, Christopher
Published 1997
74
by Moody, Peter R.
Published 1995
75
by Domes, Jurgen
Published 1985
76
by Schaller, Michael, 1947-
Published 1990
77
by Hooton, E. R.
Published 1991
78
Published 1995
79
Published 1989
80
by Bird, Isabella
Published 1992