o:1684985
Persistent identifier https://phaidra.univie.ac.at/o:1684984
Handle https://hdl.handle.net/11353/10.1684984
URI https://valep.vc.univie.ac.at/virtualarchive/public/Neurath_Institute_for_the_Unity_of_Science_to_Morris_1938-04-25_L/d:953410