Attribution-Share Alike 4.0 truetrue English Coat of arms for Austrian hydraulic and bridge engineer Ernst Lauda URL: https://commons.wikimedia.org/wiki/user:RCraig09...
Attribution-Share Alike 4.0 truetrue English Coat of arms of Ernst Ritter von Lauda (1859–1932) from 1916 onwards Wikimedia username: HruskaHeraldik author...
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