File:Siemens-Martin furnace – cross section, Otto's Encyclopedia.jpg
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DescriptionSiemens-Martin furnace – cross section, Otto's Encyclopedia.jpg |
English: Siemens-Martin furnace (cross section), as pictured in Otto's Encyclopedia (Ottův slovník naučný, 1908) Čeština: Siemens-Martinova pec (příčný řez) vyobrazená v Ottově slovníku naučném (1908). |
Date | |
Source | "Železářství." Ottův Slovník Naučný. Vol. 27. Praha: J. Otto, 1908. 775–787. Print |
Author | Unknown authorUnknown author. The author of the image is not given in the book, although it might be the author of the text entry Josef Pokorný. |
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Public domainPublic domainfalsefalse |
This work was published before January 1, 1929 and it is anonymous or pseudonymous due to unknown authorship. It is in the public domain in the United States as well as countries and areas where the copyright terms of anonymous or pseudonymous works are 95 years or fewer since publication.
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current | 19:59, 26 April 2014 | 1,821 × 1,341 (852 KB) | Jan.Kamenicek (talk | contribs) | User created page with UploadWizard |
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Orientation | Normal |
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Horizontal resolution | 72 dpi |
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File change date and time | 17:29, 26 April 2014 |
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Date and time of digitizing | 18:29, 26 April 2014 |
Date metadata was last modified | 18:29, 26 April 2014 |