1
by Schulzinger, Robert D.
Published 2002
2
by Wicker, Elmus
Published 2000
3
by Ravetz, Alison
Published 2001
4
5
Published 1999
6
by Pulle, Caroline
Published 1997
7
8
by Grant, R.G.
Published 1998
9
by Yergin, Daniel
Published 1991
10
by Hayes, Declan
Published 2001
11
by Aldrich, Richard J.
Published 2001
12
13
by Thatcher, Margaret
Published 2002
14
by Buxbaum, Gerda
Published 2005
15
16
by Turner, Stanfield
Published 2005
17
Published 2008
18
by Suermondt, Jan
Published 2001
19
by Muller, Florence
Published 2008
20
by Abella, Alex
Published 2008