1.
Haryono H, Rubaya AK. Filter ZeRAK for Decreasing Water Hardness and Coliform. Sanitasi [Internet]. 2020 May 4 [cited 2024 Nov. 6];12(2):63-9. Available from: https://e-journal.poltekkesjogja.ac.id/index.php/Sanitasi/article/view/1025