o:1488388
Persistent identifier https://phaidra.univie.ac.at/o:1488387
Handle https://hdl.handle.net/11353/10.1488387
URI https://valep.vc.univie.ac.at/virtualarchive/public/Folder_3c_Proof_Sheets_Early_Articles_Items_13-21_1930-1931_1930-1931/a:653464