BRIEF [O.A.] Roche, H... de La Author: Roche, H... de La Recipient: Haeckel, Ernst Dating: 29.10.1914
BRIEF [O.A.] Roche, H... de La Author: Roche, H... de La Recipient: Haeckel, Ernst Dating: 03.10.1914
BRIEF [O.A.] Roche, H... de La Author: Roche, H... de La Recipient: Haeckel, Ernst Dating: 03.10.1914