IPAL 14Nov 18 Published 17 November 2018 at 522 × 351 in Training Operator Instalasi Pengolahan Air Limbah (IPAL) : (04-05 April 2024,Bandung) (11-12 April 2024,Jakarta) (18-19 April 2024,Yogyakarta) (25-26 April 2024,Semarang)