The Relationship Between Heat Stress and Physical Workload with Worker's Hydration Status in Tirtonadi Bus Station SurakartaIwan Suryadi, Istar Yuliadi, Seviana Rinawati, Siti Rachmawati and Bekti NugraheniE3S Web Conf., 202 (2020) 12018DOI: https://doi.org/10.1051/e3sconf/202020212018