IBS construction : time to look the safety aspect / by Ahmadon Bakri, author, Rosli Mohamed, 1987-, author, Wahid Omar, Prof. Datuk Ir. Dr., 1962-, author, Z. Abd. Hamid, author, Raja Marzyani Raja Mazlan, 1978-, author, Engineering Conference on Sustainable Engineering Infrastructures Development & Management (2nd: 2008: Kuching, Sarawak)