1
by Lim
Published 1999
2
Published 1965
3
4
5
6
Published 1999
7
8
by Ungku A. Aziz
Published 1975
9
Published 1997
10
Published 2009
11
by Silcock
Published 1960
12
by Lim
Published 1956
13
by Puthucheary
Published 1960
14
by Li
Published 1982
15
Published 1955
16
by Silcock
Published 1954
17
by Tilman
Published 1964
18
by Mills
Published 1958
19
by Khor
Published 1987
20
by Rao
Published 1980