HINRICHS, N. (1971). Population, Environment & People. McGraw-Hill Book Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHINRICHS, Noel. Population, Environment & People. McGraw-Hill Book Company, 1971.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHINRICHS, Noel. Population, Environment & People. McGraw-Hill Book Company, 1971.
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