Fitriani Kasim; Khaswar Syamsu; Dwi Setyaningsih; Prayoga Suryadarma; Sudirman. THE EFFECT OF PRETREATMENT OF MICROWAVE HEATING ON EFFICIENCY OF HYDROLYSIS TIME AND α-CELLULOSIC CHARACTERISTICS OF PALM OIL WASTE BIOMASS. j. sains materi indonesia 2018, 20, 21-28.