Persistent identifier https://phaidra.univie.ac.at/o:1685031
Handle https://hdl.handle.net/11353/10.1685031
URI https://valep.vc.univie.ac.at/virtualarchive/public/Neurath_to_Philipp_Frank_Carnap_Morris_Editors_of_the_Library_of_Unified_Science_Executive_Committee_Unity_of_Science_1937-11-24_L_Original/dv:953358