The name on the calling card refers to Carl Friedrich Plattner (1800-1858), professor of metallurgy at the Freiburg Mining Akademie from 1842 to 1856.
The name on the calling card refers to Carl Friedrich Plattner (1800-1858), professor of metallurgy at the Freiburg Mining Akademie from 1842 to 1856.
"*" indicates required fields