41
42
43
44
45
46
by Khoo, Iam-Choon.
Published 1995
Published 1995
Book
47
48
49
by Khoo, Kheng- Hor,
Published 1990
Published 1990
Book
50
51
52
53
54
55
56
57
58
by Khoo, Kay Kim.
Published 2008
Published 2008
Book
59
60