ebrary, Inc. (1998). Technical and ethical guidelines for workers' health surveillance. International Labour Office.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रebrary, Inc. Technical and Ethical Guidelines for Workers' Health Surveillance. Geneva: International Labour Office, 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रebrary, Inc. Technical and Ethical Guidelines for Workers' Health Surveillance. International Labour Office, 1998.
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