1
by Botkin, Daniel B.
Published 2004
Oxford University Press

2
by Botkin, Daniel B.
Published 2004
Oxford University Press

3
by Williams, Ernest H.
Published 2005
Oxford University Press

4
by Herron, John P.
Published 2010
Oxford University Press

5
Published 2011
Cambridge University Press

6
Published 2008
Conservation International

7
Published 2009
Conservation International

8
by Davis, Peter
Published 2001
CLUEB

9
by Williams, Terry Tempest
Published 2006
Utah State University Press