Jumianti Anwar, S., Yuyun Wirasasmita and Evi Mustiqawati (2026) “Comparison of Calcium Levels (Ca2+) in Mountainous Wells and Coastal Well Water with the Crimsontry Method ”, International Journal of Multidisciplinary Learners, 2(5), pp. 60–65. Available at: https://ejournal.poltekbaubau.ac.id/index.php/ijml/article/view/1409 (Accessed: 1 October 2026).