POSTKARTE Zachariewicz, Julian von Author: Zachariewicz, Julian von Recipient: Haeckel, Ernst Dating: 27.02.1917
POSTKARTE Zachariewicz, Julian von Author: Zachariewicz, Julian von Recipient: Haeckel, Ernst Dating: 07.03.1917
POSTKARTE Zachariewicz, Julian von Author: Zachariewicz, Julian von Recipient: Haeckel, Ernst Dating: 11.02.1917