Zupanc, Nina, and Iztok Devetak. “The Analysis of Electrolyte Chemistry Pictorial Material in Lower Secondary Chool Chemistry Textbooks in Slovenia Based on Developed Quality Criteria”. Scientia in educatione 12, no. 1 (July 29, 2021): 5–15. Accessed July 4, 2025. https://medusa.is.cuni.cz/scied/article/view/1926.