1
by Pearce, D. W, 1941-
Published 1993
2
by Enders, Walter, 1948-
Published 2006
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3
by Maskus, Keith E.
Published 2000
4
by Pi, Chung Ron
Published 1996
5
by Dyson, Tim.
Published 2010
6
by Czeschin, Robert W.
Published 1994
7
by Bartelmus, Peter
Published 1994
8
by Lomborg, Bjorn
Published 2007
9
by Link, Albert N.
Published 2003
10
by Wilkin, Peter
Published 2001
11
by Mahathir Mohamad
Published 2006
12
by Brennan, Teresa, 1952-
Published 2003
13
by Marsh, David
Published 1995
14
Published 2001
15
16
Published 1998
17
by Prugh, Thomas
Published 2000
18
Published 1992
19
by Hill, John S, 1951-
Published 2005
20
Published 1992