Persistent identifier https://phaidra.univie.ac.at/o:1684442
Handle https://hdl.handle.net/11353/10.1684442
URI https://valep.vc.univie.ac.at/virtualarchive/public/Manuel_J_Andrade_to_Institute_for_the_Unity_of_Science_Neurath_1938-04-16_L_Copy/dv:951090