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" ASSESSMENT OF HEALTH AND SAFETY RISK (OHS) USED OHSAS VARIABLES WITH HIRA, HAZID AND HAZOP METHOD (CASE STUDY OF PROJECT CIPUTRA WORLD PHASE 3, SURABAYA)" <em>Jurnal Rekayasa Sipil dan Lingkungan</em> [Online], Volume 3 Number 1 (3 June 2019)