Safitri, Ayu, - Muharni, and Heni Yohandini Kusumawati. 2017. “CONDITION OPTIMIZATION PRODUCTION XYLANASE THERMOSTABLE BY Bacillus Licheniformis TS10 USING SUBSTRATE OIL PALM EMPTY FRUIT BUNCHES”. BIOVALENTIA: Biological Research Journal 3 (1):8-16. https://doi.org/10.24233/BIOV.3.1.2017.51.