1.
Rachmat RS. Analisis Kandungan Kalsium (Ca) pada Air Tanah Bansir Darat Pontianak Tenggara. QJPIA [Internet]. 2022 Feb. 26 [cited 2025 Oct. 23];1(2):67-72. Available from: https://jurnalstkipmelawi.ac.id/index.php/QJIPI/article/view/482