Organisation for Economic Co-operation and Development, P. (1977). Energy production and environment Paris. The Author.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOrganisation for Economic Co-operation and Development, Paris. Energy Production and Environment Paris. The Author, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOrganisation for Economic Co-operation and Development, Paris. Energy Production and Environment Paris. The Author, 1977.
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