EKSTRAKSI, KARAKTERISASI DAN DAYA PENGHAMBATAN KITOSAN ALAMI TERHADAP JAMUR Colletotrichum musae SECARA IN VITRO = EXTRACTION, CHARACTERIZATION AND INHIBITION TEST OF NATURAL CHITOSAN TO Colletotrichum musae IN VITRO - Perpustakaan UGM, i-lib ([Yogyakarta] : Universitas Gadjah Mada, 2009)