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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रebrary, Inc. Guidelines on Occupational Safety and Health Management Systems. Geneva: ILO, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रebrary, Inc. Guidelines on Occupational Safety and Health Management Systems. ILO, 2001.
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