Image: Davy lamp
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Description: en:Davy lamp, a safety lamp for use in coal mines
Title: Davy lamp
Credit: Bibliothek allgemeinen und praktischen Wissens für Militäranwärter Band III, 1905 / Deutsches Verlaghaus Bong & Co Berlin * Leipzig * Wien * Stuttgart
Author: Scan made by Kogo
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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