schema:identifier
<na3555da758c44abbb8dd0056af643228b3>

schema:propertyID "NL-AmRIJ"
schema:value "254765"

schema:about
<na3555da758c44abbb8dd0056af643228b1>

schema:alternateName "1855-1920"

schema:about
<na3555da758c44abbb8dd0056af643228b2>

schema:alternateName "Open-hearth process"

Inverse relations

[ .. ] → schema:exampleOfWork → The acid open hearth furnace upto 1920

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