Não informado. (1967). Ocean Oil Weekly Report. Offshore Oil Industry.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Ocean Oil Weekly Report. Houston, Tex: Offshore Oil Industry, 1967.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Ocean Oil Weekly Report. Offshore Oil Industry, 1967.
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