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42Texto bibliotecaFAO IT
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48by CONVENTION ON LONG-RANGE TRANSBOUNDARY AIR POLLUTION 402073, EUROPEAN COMMISSION 49916, FEDERAL RESEARCH CENTRE FOR FORESTRY AND FOREST PRODUCTS 403571, INTERNATIONAL COOPERATIVE PROGRAMME ON ASSESSMENT AND MONITORING OF AIR POLLUTION EFFECTS ON FORESTS (ICP FORESTS) 411139, UNITED NATIONS. ECONOMIC COMMISSION FOR EUROPE (UN ECE).Texto bibliotecaFAO IT