Cytotoxicity Identification of the Supernatant of Manihot esculenta Cranz Rhizome as Ribosome-Inactivating Protein to Normal Cell = Sitotoksisitas Supernatan Umbi Manihot esculenta Crantz dengan Aktivitas Ribosome- .. - Perpustakaan UGM, i-lib ([Yogyakarta] : Universitas Gadjah Mada, 2004)