File:Neue Erzaufbereitung Clausthal 1905.png

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Description
Deutsch: „Neue Erzaufbereitung“ bei Clausthal um 1905 (bis 1930 in Betrieb)
Date
Source Gangkarte des Oberharzes mit Erläuterungen, Geologisches Jahrbuch, Reihe D, Heft 46, Bundesanstalt für Geowissenschaften und Rohstoffe/Geologische Landesämter in der Bundesrepublik Deutschland, Hannover, 1981
Author Zirkler (um 1905)

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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Neue_Erzaufbereitung_Clausthal_1905.png

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