o:1529658
Persistent identifier https://phaidra.univie.ac.at/o:1529657
Handle https://hdl.handle.net/11353/10.1529657
URI https://valep.vc.univie.ac.at/virtualarchive/public/Hempel_Confirmation_and_Disconfirmation_of_Empirical_Hypotheses_1939-04_M/d:848365