Environmental planning and management in traditional market: a study at Ibuh Market (Payakumbuh) and Pandansari Market (Balikpapan)S Sunarto, Sessario B. Mangkara and Miftahul ArozaqE3S Web Conf., 153 (2020) 02005DOI: https://doi.org/10.1051/e3sconf/202015302005