1
by Thurber, Walter A.
Published 1977
2
Published 2009
3
by Feynman, Richard P.
Published 2005
4
by Candlin, R.
Published 1983
5
Published 2004
6
by Avery, J.H
Published 1980
7
by McGrath, Susan.
Published 1986
8
by Randal, Lisa
Published 2006
9
by Beiser, Arthur.
Published 1987
10
by Nelkon, M.
Published 1977
11
by Bennet, G. A.G.
Published 1977
12
Published 1973
13
Published 2003
14
15
by Lazaroo, Audrey
Published 2008
16
Published 1994
17
by Yee, Cheng Teik
Published 2007
18
by Yap, C.H.
Published 2007
19
by Kibble, R.
Published 1989
20
by Tan, Leonard Oon Soo
Published 2005