A document with dmg id 48250023 is not in the database. Thus, metadata can not be shown.
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Railroad Car Coupling patent (1874), symbolic image |
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Description
symbolic image for the interactive animation of a patent from 1874 for a railroad car coupling |
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A document with dmg id 48250023 is not in the database. Thus, metadata can not be shown.
To view metadata you may select an other document from the list of known documents.