Suparmini, Ni Made (2000) Uji Efek Peredaman Radikal Bebas Ekstrak Metanol Rimpang Lempuyang Pahit (Zingiber amaricans BI) terhadap Radikal Bebas 1,1-Diphenyl 2-Picrylhydrazyl (DPPH) Secara Spektofotometri Tampak. [Undergraduate thesis]