Sosnowska, J. 2013. Activities of “Kropla Mleka” Society consisting in the provision of care for children and mothers in Łódź during the World War I. Studia z Historii Społeczno-Gospodarczej XIX i XX Wieku. 11, (Jan. 2013), 67–82. DOI:https://doi.org/10.18778/2080-8313.11.05.