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Credit
De Verplaatsing van eenige triangulatie-pilaren in de residentie Tapanoeli (Sumatra) tengevolge Van De Aardbeving Van 17 Mei 1892 / door J. J. A. Muller. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.