Szlachcikowska, Żaneta 2025. Report from the scientific session ‘Brudna i czysta polszczyzna’ [Dirty and Clean Polish] held as part of the 5th Mother Tongue Week in the Bydgoszcz Branch of the Society of Polish Language Lovers, Bydgoszcz 11 March 2024. Papers in Linguistics. 27, 2 (Jun. 2025), 285–295. DOI:https://doi.org/10.31648/pj.11316.