Antczak, M. 2022. Class Conflict of the Lodz Proletariat (1905–1939) according to memoirs of Bałuty Communist Activists. Part I: Activism in the SDKPiL (Social Democracy of the Kingdom of Poland and Lithuania) and PPS-Lewica (Polish Socialist Party-Left) until the restoration of independent Poland. Studia z Historii Społeczno-Gospodarczej XIX i XX Wieku. 25, (Dec. 2022), 161–182. DOI:https://doi.org/10.18778/2080-8313.25.08.