Zwolińska-Pieniążek, P. 2025. The phenomenon of broadcasts discussing letters to the editor (the so-called ‘mailbag’) on Polish Radio during the interwar period. Filologia Polska. Roczniki Naukowe Uniwersytetu Zielonogórskiego. 11, (Dec. 2025), 117–125. DOI:https://doi.org/10.61827/fp2025a7.