concept

Vivisektion / [Theodor Beer].

Die Weltanschauung eines modernen Naturforschers : ein nicht-kritisches Referat über Mach's "Analyse der Empfindungen" / von Theodor Beer.

Ueber primitive Sehorgane / von Dr. Theodor Beer.

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Theodor Beer

Works from the collections

Vivisektion / [Theodor Beer].

Die Weltanschauung eines modernen Naturforschers : ein nicht-kritisches Referat über Mach's "Analyse der Empfindungen" / von Theodor Beer.

Ueber primitive Sehorgane / von Dr. Theodor Beer.