Não informado. (2023). Rock Products and Building Materials. Maclean Hunter.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Rock Products and Building Materials. Chicago, Ill: Maclean Hunter, 2023.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Rock Products and Building Materials. Maclean Hunter, 2023.
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