Rahayuningsih CK, Lestari I. THE ADDITION OF SIWALAN BORASSUS FLABELLIFER WATER AGAINTS TOTAL HARDNESS LEVEL IN WELL WATER. JKP [Internet]. 2018 Apr. 10 [cited 2025 Jun. 23];11(2):104-10. Available from: https://jkp.poltekkes-mataram.ac.id/index.php/home/article/view/3