Fig. 2: An illustrated article published in the “Illustrierter Beobachter” on 28 September 1939, Photographs by Schwahn, Hinz, Platzek [PK-photographers]; Haeckel
Abb. 2
Fig. 2: An illustrated article published in the “Illustrierter Beobachter” on 28 September 1939, Photographs by Schwahn, Hinz, Platzek [PK-photographers]; Haeckel