Tarida Savana, R. 2018. ANALISIS KOMPOSISI UNSUR PUPUK LEPAS LAMBAT KITOSAN-SILIKA-GLUTARALDEHIDELEMENT COMPOSITION ANALYSIS CHITOSAN-SILICA-GLUTARALDEHYDE SLOW RELEASE FERTILIZER. Unesa Journal of Chemistry. 7, 1 (Mar. 2018). DOI:https://doi.org/10.26740/ujc.v7n1.p%p.