BRIEF OHNE UMSCHLAG Darwin, Charles Author: Darwin, Charles Recipient: Haeckel, Ernst Dating: 20.12.1872
BRIEF [O.A.] Alglave, Emile Author: Alglave, Emile Recipient: Haeckel, Ernst Corporation: Revue Politique et Littéraire, Revue Scientifique Dating: 20.04.1872
BRIEF [O.A.] Alglave, Emile Author: Alglave, Emile Recipient: Haeckel, Ernst Corporation: Revue Politique et Littéraire, Revue Scientifique Dating: 16.05.1872
BRIEF [O.A.] Alglave, Emile Author: Alglave, Emile Recipient: Haeckel, Ernst Corporation: Revue Politique et Littéraire, Revue Scientifique Dating: 23.11.1872
BRIEF OHNE UMSCHLAG Müller, Hermann Author: Müller, Hermann Recipient: Haeckel, Ernst Dating: 07.06.1872