State of the world 1991 :
State of the world 1991 : a worldwatch institute report on progress toward a sustainable society /
Lester R Brown...[et al]
- New York : W. W. Norton, c1991.
- xvii, 254 : ill, ; 24 cm.
Includes bibliographical references and index.
0393307336
Environmental Pollution
Pollution
363.73
Includes bibliographical references and index.
0393307336
Environmental Pollution
Pollution
363.73