BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Möbius, Karl August Dating: 15.06.1888
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Möbius, Karl August Dating: 10.08.1888
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Möbius, Karl August Corporation: Zoologisches Institut Jena Dating: 01.12.1897
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Möbius, Karl August Corporation: Zoologisches Institut Jena Dating: 24.02.1898
