Zarębianka, Z. 2025. On Zbigniew Herbert’s Poem “Substancja” (Substance) in the Context of Philosophical Definitions of the Term and the Work “Naród” (Nation) as well as Fragments of Czesław Miłosz’s “Traktat poetycki” (Poetic Treatise). Litteraria Copernicana. 50, 3-4 (May 2025), 73–80. DOI:https://doi.org/10.12775/LC.2024.019.