Załuszniewska, A., Bieniek, A. i Nogalska, A. 2020. The organic matter content and pH of forest soils in the Brodnica Forest Division. Polish Journal of Agronomy. 43, 43 (grudz. 2020), 70–75. DOI:https://doi.org/10.26114/pja.iung.434.2020.43.07.