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Convention sur la pollution atmosph�erique transfronti�ere �a longue distance, de 1979, et ses protocoles / Commission �economique pour l'Europe, Gen�eve.
- 341.76252 U5813c
- United Nations. Economic Commission for Europe.
- Nations Unies,
- 1996.
- New York :
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Rapport annuel / Commission Économique pour l'Europe.
- 330.94 U5813r 1994
- United Nations. Economic Commission for Europe.
- Nations Unies
- New York ; Genève :
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Annual report / Economic Commission for Europe.
- 330.94 U5813 1995
- United Nations. Economic Commission for Europe.
- 1950-2009.
- New York ; Geneva : United Nations,