Paull, John, and Pawel Bietkowski. “Stanisław Karłowski (1879-1939): Pioneer of Biodynamic Farming and Organic Agriculture in Poland”. Advances in Social Sciences Research Journal 9, no. 7 (July 26, 2022): 358–387. Accessed November 23, 2024. http://116.203.177.230/index.php/ASSRJ/article/view/12692.