Siregar, I. F. ., Rismawaty and Halimatus Syahdia Hasibuan (2022) “Patchouli Agroindustry Technology In Guo Batu Village, Mandailing Natal Regency, North Sumatera Province”, Jurnal Riset Perkebunan, 3(2), pp. 56–65. doi: 10.25077/jrp.3.2.56-65.2022.