Não informado. (1947). Chemical Engineering Progress. American Institute of Chemical Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Chemical Engineering Progress. New York: American Institute of Chemical Engineers, 1947.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Chemical Engineering Progress. American Institute of Chemical Engineers, 1947.
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