1
by Fick, David S.
Published 2002
2
Published 1998
3
Published 1992
4
5
Published 2003
6
Published 2003
7
8
by Murray, Geoffrey, 1942-
Published 1998
9
Published 2000
10
Published 1990
11
Published 2001
12
by Tipton, Elise K.
Published 2002
13
Published 2002
14
by Ostergaard-Nielsen, Eva, 1969-
Published 2003
15
Published 2003
16
by Somchai Phatharathananunth
Published 2006
17
Published 2006
18
by Gutierrez, Eric
Published 2004
19
by Aganbegyan, Abel
Published 1988
20
Published 2006