University of Chicago. Encyclopaedia Británnica. Index to volumes 1 to 23, atlas, index to atlas, list of contributores.
Cita Chicago (17th ed.)University of Chicago. Encyclopaedia Británnica. Index to Volumes 1 to 23, Atlas, Index to Atlas, List of Contributores.
Cita MLA (8th ed.)University of Chicago. Encyclopaedia Británnica. Index to Volumes 1 to 23, Atlas, Index to Atlas, List of Contributores.
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