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2. The effects of acid deposition on buildings and materials in the United Kingdom,1989
3. Identification and assessment of materials damage to buildings and monuments by air pollution;ECOTEC,1986
4. Identification and assessment of materials damage to buildings and monuments by air pollution;ECOTEC,1990
5. Technicaleconomic evaluation of air pollution corrosion costs on metals in the U.S.;Fink,1971