Chiras, D. D. (2010). Natural resource conservation: Management for a sustainable future (10th ed.). Benjamin Cummings/Pearson.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChiras, Daniel D. Natural Resource Conservation: Management for a Sustainable Future. 10th ed. Upper Saddle River, N.J: Benjamin Cummings/Pearson, 2010.
एमएलए (9वां संस्करण) प्रशस्ति पत्रChiras, Daniel D. Natural Resource Conservation: Management for a Sustainable Future. 10th ed. Benjamin Cummings/Pearson, 2010.
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