Kumar, R. (1987). Environmental pollution and health hazards in India. Ashish.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKumar, R. Environmental Pollution and Health Hazards in India. New Delhi: Ashish, 1987.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKumar, R. Environmental Pollution and Health Hazards in India. Ashish, 1987.
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