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Die Lage der Umwelt in der Europäischen Gemeinschaft 1986
1987
Persistent link: https://www.econbiz.de/10000745807
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Lady Bird Johnson and the environment
Gould, Lewis L. - 1988
Persistent link: https://www.econbiz.de/10000747470
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Evolving environmental perceptions : from Stockholm to Nairobi
Tolba, Mostafa Kamal (contributor) - 1987
Persistent link: https://www.econbiz.de/10000752894
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The state of the world environment 1972 - 1982 : report of the executive director
1982
Persistent link: https://www.econbiz.de/10000722659
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Az ökológia kérdései a sajtóban
Kováts, Ildiko; Tölgyesi, János - 1986
Persistent link: https://www.econbiz.de/10000723876
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Unsere gemeinsame Zukunft : [der Brundtland-Bericht]
Brundtland, Gro Harlem - 1987
Persistent link: https://www.econbiz.de/10000729695
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Environmental problems of developing countries
Laaser, Wolfram - 1987
Persistent link: https://www.econbiz.de/10000731048
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The state of the environment in the European Community 1986
1987
Persistent link: https://www.econbiz.de/10000732013
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The state of the environment report for South Australia
1988
Persistent link: https://www.econbiz.de/10000799278