61
Published 1984
62
Published 2001
63
Published 2001
64
Published 2000
65
Published 1991
66
Published 1996
67
Published 1988
68
Published 2001
69
Published 2001
70
Published 2001
71
Published 2000
72
by Pisawat Sukonthapon
Published 1985
73
Published 2001
74
by Churchill, R. R
Published 1992
75
Published 2000
76
Published 1992
77
Published 1999
78
Published 2001
79
Published 1985
80
Published 2002