BRIEF [O.A.] Castex, Susana Torres de Author: Castex, Susana Torres de Recipient: Haeckel, Ernst Dating: 06.04.1903
BRIEF [O.A.] Harperath, Ludw... Author: Harperath, Ludw... Recipient: Haeckel, Ernst Corporation: Universidad de Cordoba Dating: 20.12.1903