Kumar, C. S. (1998). Environmental problems and development: A geographical study. Ganga Kaveri Pub.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKumar, Chandra Shekhar. Environmental Problems and Development: A Geographical Study. Ganga Kaveri Pub, 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKumar, Chandra Shekhar. Environmental Problems and Development: A Geographical Study. Ganga Kaveri Pub, 1998.
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