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Julius Carl Ertel. Ein Hamburger Industrieller
Hamburgentrepreneurbiographyperiod of foundationmetalworking industrydonorpromotion of art and science
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Public-domain status shown for GLOBAL. OAPEN open-access record with explicit license: CC-BY-ND
Public-domain status shown for GLOBAL. OAPEN open-access record with explicit license: CC-BY-ND