Sudarti, S.; Hariyati, Y. .; Sari, A. B. T. .; Sumardi, S.; Muldayani, W. . Fermentation Process of Dry Cocoa Beans through Extremely Low Frequency (ELF) Magnetic Field Exposure. jppipa, pendidikan ipa, fisika, biologi, kimia 2022, 8, 584-591.