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Lua i Stíl Chicago (17ú heag.)World's Columbian Exposition. The World's Columbian Exposition: Photo-gravures. New York: A. Wittemann, 1893.
Lua MLA (8ú heag.)World's Columbian Exposition. The World's Columbian Exposition: Photo-gravures. A. Wittemann, 1893.
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