Septi Wulandari and Mauritz Pandapotan Marpaung (2022) “PENATAPAN KADAR ALKALOID INFUSA BIJI KOPI ROBUSTA SANGRAI (Coffea canephora Pierre Ex. A Froehner) DENGAN SPEKTROFOTOMETRI UV-VIS”, Jurnal Kesehatan : Jurnal Ilmiah Multi Sciences, 12(02), pp. 113 - 119. doi: 10.52395/jkjims.v12i02.352.