De Haan, H. (1995). New developments improved oil recovery. The Geological Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDe Haan, H.J. New Developments Improved Oil Recovery. London: The Geological Society, 1995.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDe Haan, H.J. New Developments Improved Oil Recovery. The Geological Society, 1995.
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