Keawram, P.; Pongsapukdee, V.; Kanoksilapatham, W. Isolation of Thermotoga Spp. And Fervidobacterium spp., and Characterization of 16S RRNA Genes of Order Thermotogales: Unique Lineage of Hyperthermophiles Thriving in 3 Hot Springs in Thailand. SEHS 2016, 10, 9-20.