|
1
|
|
|
|
HC59
.S8
|
State of the world 1996 : a worldwatch institute reprot on progess toward a sustainable society
|
New York, [ United States ] : W. W. Norton and Company , 1996
|
|
|
34764
|
|
2
|
|
|
|
Ref.GE170
.G6
|
Global environment outlook 2000
|
London, [ United Kingdom ] : Earthscan Publications , 1999
|
United Nations Environment Programme
|
|
40760
|
|
3
|
|
|
|
HC59
.S8
|
State of the world 2008 : Innovations for a sustainable economy/Worldwatch istitute; edited by Linda Starke
|
London, [ United Kingdom ] : Earthscan , 2008
|
Worldwatch istitute
|
9781844074983
|
94513
|