Agrahari Ravi.P. (2022). Environmental Ecology,Biodiversity,Climate Change And Disaster Management (2ND.). Mc Grow Hill Education (India).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAgrahari Ravi.P. Environmental Ecology,Biodiversity,Climate Change And Disaster Management. 2ND. Chennai: Mc Grow Hill Education (India), 2022.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAgrahari Ravi.P. Environmental Ecology,Biodiversity,Climate Change And Disaster Management. 2ND. Mc Grow Hill Education (India), 2022.
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