Zigmunde A, Šapovalovs O. The activities of factory «Prowodnik» in Riga and its employees – graduates of the Riga Polytechnicum / Riga Polytechnic Institute. HESIHE [Internet]. 2018 Nov. 1 [cited 2026 Mar. 6];2:61-75. Available from: https://hesihe-journals.rtu.lv/hesihe/article/view/HESIHE.2018.005