Erich Kretschmann
Erich Justus Kretschmann (14 July 1887 – 1973) was a German physicist. == Life == Kretschmann was born in Berlin.
Erich Justus Kretschmann (14 July 1887 – 1973) was a German physicist. == Life == Kretschmann was born in Berlin.
Erich Justus Kretschmann (14 July 1887 – 1973) was a German physicist. == Life == Kretschmann was born in Berlin.
Source: Wikipedia "Erich Kretschmann" · CC BY-SA 4.0
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