Wyzga, R. R. (1974). Energy and environment. Paris: Organisation for economic co-operation and development.
शिकागो स्टाइल उद्धरणWyzga, R. R. Energy and Environment. Paris: Organisation for economic co-operation and development, 1974.
एमएलए उद्धरणWyzga, R. R. Energy and Environment. Paris: Organisation for economic co-operation and development, 1974.
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