Yasser, M., & Badai, M. (2019). KAREKTERISASI EKSTRAK ETANOL UBI JALAR UNGU (Ipomea batatas L) MENGGUNAKAN SPEKTROSKOPI INFRARED. Cokroaminoto Journal of Chemical Science, 1(1), 4–6. Retrieved from https://science.e-journal.my.id/cjcs/article/view/11