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Vierpoliger Gleichstromdynamo von Schuckert. Vierpoliger Gleichstromdynamo von Schuckert Co Fourpolar dc dynamo by Schuckert Co Bibliothek allgemeinen und praktischen Wissens fr Militranwrter Band III Deutsches Verlaghaus Bong Co Berlin Leipzig Wien Stuttgart Scan made by Kogo Public Domain because copyright expired PDold Dynamos