Sinha, B. K., & Mishra, A. (1983). Studies in environmental mathematics: Perspectives and approaches. South Asian pub.
शिकागो स्टाइल उद्धरणSinha, B K., और A. Mishra. Studies in Environmental Mathematics: Perspectives and Approaches. New Delhi: South Asian pub, 1983.
एमएलए उद्धरणSinha, B K., और A. Mishra. Studies in Environmental Mathematics: Perspectives and Approaches. South Asian pub, 1983.
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