2
Published 1993
Book
3
Published 1948
Book
4
Published 1997
Book
5
Published 1987
Book
6
Published 1888
Book
7
Published 2005
Book
8
Published 1992
Book
9
Published 1996
Book
10
Published 1998
Book
11
Published 2008
Book
12
Published 2010
Book
13
Published 1977
Journal / Magazine
14
Published 2006
Book
15
Published 1977
Book
16
Published 1966
Book
17
Published 1969
Book
18
Published 1966
Book
19
Published 2008
Book
20
by Ting, K. H.
Published 2002
Book