o:1684493
Persistent identifier https://phaidra.univie.ac.at/o:1684492
Handle https://hdl.handle.net/11353/10.1684492
URI https://valep.vc.univie.ac.at/virtualarchive/public/Institute_for_the_Unity_of_Science_Neurath_to_Morris_1939-07-05_L/d:953500