UJI KINERJA DISTILASI VAKUM GELOMBANG MIKROUNTUK MENINGKATKAN KADAR PATCHOULI ALKOHOL PADA PEMURNIAN MINYAK NILAM (Performance Test of Microwaves Vacuum Distillation to Increase Purity Patchouli Alcohol In Patchouli Oil Purification) - ZILLA, ADISTI NOOR (2012)