BRIEF [O.A.] Testut, Léo Author: Testut, Léo Recipient: Haeckel, Ernst Corporation: Faculté de Medicine Dating: 26.11.1882
BRIEF [O.A.] Testut, Léo Author: Testut, Léo Recipient: Haeckel, Ernst Corporation: Laboratoire d`Anatomie Dating: 08.03.1903