o:1501580
Persistent identifier https://phaidra.univie.ac.at/o:1501579
Handle https://hdl.handle.net/11353/10.1501579
URI https://valep.vc.univie.ac.at/virtualarchive/public/Folder_18_An_Axiom_System_of_Inductive_Logic_Chapters_1-13_old_uncorrected_4_Predicate_Languages/a:653318