http://book.klll.cc/ebooks/subject/32811.opds2025-11-16T21:43:37ZBooks about Building stones -- Deterioration -- Washington (D.C.)Free eBooks since 1971.Project Gutenberghttps://book.klll.ccwebmaster@gutenberg.orghttps://book.klll.cc/gutenberg/favicon.ico2512025-11-16T21:43:37Zhttps://book.klll.cc/ebooks/57972.opdsAcid Rain and Our Nation's Capital: A Guide to Effects on Buildings and MonumentsE. S. McGee