PENINGKATAN KADAR PATCHOULI ALCOHOL DALAM PEMURNIAN MINYAK NILAM DENGAN MENGGUNAKAN TEKNOLOGI DISTILASI VACUM GELOMBANG MIKRO (Enhancement of Patchouli Alcohol Degree in Purification Patchouli Using Microwave Distillation Vacum Technology) - ARNINDYA, RIZZA CHINDIRA (2012)