Singh, R. a. S., & Singh, R. a. (1984). Environmental Appraisal and Rural Habitat Transformation. National Geographical Society of India.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSingh, R.L. and Singh, और R.L. and;Singh Singh. Environmental Appraisal and Rural Habitat Transformation. National Geographical Society of India, 1984.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSingh, R.L. and Singh, और R.L. and;Singh Singh. Environmental Appraisal and Rural Habitat Transformation. National Geographical Society of India, 1984.
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