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OHSAS 18001 Tham khảoThực đơn
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OHSAS 18001 Ohsama Sentai King-Ohger Osas Ighodaro Ohashi Hisashi Osasco Ohashi Naoya Osas Okoro Ohashi Kenzo Ohashi Masahiro Ohashi HiroshiTài liệu tham khảo
WikiPedia: OHSAS 18001 http://www.ohsas18001-occupational-health-safety.c... https://web.archive.org/web/20130103091449/http://...