World Health Organization. (1972). Health hazards of the human environment. s.n.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Health Hazards of the Human Environment. Geneva: s.n, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Health Hazards of the Human Environment. s.n, 1972.
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