Não informado. (1977). Journal of Powder and Bulk Solids Technology. International Powder Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Powder and Bulk Solids Technology. Chicago, Ill: International Powder Institute, 1977.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Powder and Bulk Solids Technology. International Powder Institute, 1977.
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