Eso, R., Muhammad Abdullah Azam Undu, Sumarno, & Muhammad Anas. (2020). Efek Variasi Waktu dan Jumlah Lilitan pada Sistem Filter Elektromagnetik Terhadap Penurunan Kadar Pb, Zn dan Co: (Effects of Time Variation and Number of Turns in Electromagnetic Filter Systems on Decreasing Levels of Pb, Zn and Co). Gravitasi, 19(2), 40-43. https://doi.org/10.22487/gravitasi.v19i2.15357