Autograph,&nbsp;Gerhard Ertl. is a German Physicist and Professor Emeritus at the department of Physical Chemistry, Awarded the 2007 Nobel Prize in Chemistry for his studies of chemical processes on solid surfaces, about extremely fine.

Autograph of German Physician Gerhard Ertl.

Autograph of German Physician Gerhard Ertl.

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Autograph of Bronislaw Maria Komorowski.