Sikorska-Kowalska, M. 2019. The environment of radical intelligentsia at the turn of 19th and 20th century. An attempt at a portrait. Studia z Historii Społeczno-Gospodarczej XIX i XX Wieku. 19, (Jun. 2019), 33–50. DOI:https://doi.org/10.18778/2080-8313.19.03.