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ZILDA, D. S.; HARMAYANI, E.; WIDADA, J.; ASMARA, W.; IRIANTO, E.; PATANTIS, G.; FAWZYA, Y. N. Optimization of Culture Conditions to Produce Thermostable Keratinolytic Protease of Brevibacillus Thermoruber LII, Isolated from the Padang Cermin Hot Spring, Lampung, Indonesia. Microbiol indones 2013, 6, 8.